STD : XI
SUBJECT: PHYSICS CHAPTERWISE IMPORTANT QUESTIONS
CHAPTER-1
2-Marks
1. Define precision and accuracy. Give examples.
2. Write any two errors systematic errors. Explain them. (MAR 19)
3. Define unit.
4. Define Dimensional variables. (SEP 20)
5. Define Dimensionless variables. (SEP 20)
6. Define Dimensional constant.
7. Define Dimensionless constant.
8. What is principle of homogeneity of dimensions? Give example. (MAR 19,JUNE 23,24)
9. In a submarine equipped with sonar, the time delay between the generation of a pulse and its echo after reflection from an
enemy submarine is observed to be 80s. If the speed of sound in water is 1460ms-1. What is the distance of enemy
submarine? (Ex:1,CH-1) (MAY 22)
10. From a point on the ground, the top of a tree is seen to have an angle of elevation 60°. The distance between the tree and a
point is 50m. Calculate the height of the tree? (MAR 20)
11. Check the correctness of the equation 1/2 mv2= mgh using dimensional analysis method. (Exam 1.12) (MAR 20,MAY 22)
12. Check the following equation by dimensional method 𝐸 = 𝑚𝑐2. (JUNE 19)
3-Marks
1. How will you measure the diameter of the Moon using parallax method?
2. Write the rules for determining significant figures. (MAR 23)
3. What are the limitations of dimensional analysis? (JUNE 19, 22, MAR 24)
4. Write the rules for determining Rounding – off
5. Write the application of Dimensional analysis. (SEP 20,MAY 22)
6. What are Gross errors? State the reasons for it and how to minimize the error. (JULY 22,MAR 23)
7. What are fundamental and derived quantities? Give examples. (SEP 20,MAR 24)
8. A RADAR signal is beamed towards a planet and its echo is received 7 minutes later. If the distance between the planet and
the Earth is 6.3 × 1010 m. Calculate the speed of the signal? (JUNE 24)
5-Marks
1. Explain in detail the various types of errors. (JUNE 23,24)
2. What do you mean by propagation of errors? Explain the propagation of errors in addition and multiplication.
3. Write a note on triangulation method (JUNE 23) and radar method to measure larger distances. (MAR 20,JULY 22,23,24)
4. Assuming that the frequency γ of a vibrating string may depend upon i) applied force (F) ii) length (l) iii) mass per unit
length (m), prove that γα 1 F using dimensional analysis. (CH:1,Ex-3) (MAR 2024)
l m
5. Obtain an expression for the time period T of a simple pendulum. The time period T depends on (i) mass „m‟ of the bob (ii)
length „l‟ of the pendulum and (iii) acceleration due to gravity g at the place where the pendulum is suspended. (Constant k
= 2π) (Example 1.15) (MAR 23)
6. Express 76 𝑐m of mercury pressure in terms of 𝑁m−2 using the method of dimensions. (SEP 20)
7. What do you mean by propagation of errors? Explain propagation of errors in division of two quantities. (MAR 20)
8. In a series of successive measurements in an experiment, the readings of the period of rotation of a wheel were found to be
2.15s, 2.25s, 2.28s and 2.32s. Calculate (i) the mean value of the period of rotation (ii) the absolute error in each
measurement (iii) The mean absolute error (iv) The relative error (v) The percentage error. Express the result in proper
form. (model Example 1.14) (JUNE 19)
9. Derive an expression for the force F acting on a body moving in a circular path depends on mass of the body (m), velocity
(v) and radius (r) of the circular path. Obtain the expression for the force by dimensional analysis method. (Take the value of
k=1) (MAR 19)
CHAPTER-2
2-Marks
1. Define a vector. Give examples. (JUN 19,MAR 24)
2. Define a scalar. Give examples. (JUN 19,MAR 23)
3. Define displacement and distance. (MAR 20)
4. Define velocity and speed.
5. Define acceleration.
6. What is the difference between velocity and average velocity? (JUNE 23)
PREPARED BY: M.PRABAKARAN (PGT-PHYSICS) 1
SRI VIVEKANANDA HR SEC SCHOOL, EARVAIPATTINAM, KALLAKURICHI.
, STD : XI
SUBJECT: PHYSICS CHAPTERWISE IMPORTANT QUESTIONS
7. Define a radian.
8. Define angular displacement and angular velocity.
9. What is non-uniform circular motion?
10. What is projectile? Give two examples. (MAR 19)
11. Consider two trains A and B moving along parallel tracks with the same velocity in the same direction. Let the velocity of
each train be 50 km h-1 due east. Calculate the relative velocities of the trains. (Example 2.28) (JULY 22)
12. A particle moves along the x-axis in such a way that its coordinates x varies with time ‟t” according to the equation
𝑥=2−5𝑡+6𝑡2. What is the initial velocity of the particle? (Example 2.25) (MAY 22)
13. A particle is in circular motion with an acceleration α=0.2rads-2. (a) What is the angular displacement made by the particle
after 5 s? (b) What is the angular velocity at t = 5 s? Assume the initial angular velocity is zero. (Example 2.41) (JUNE 24)
3-Marks
1. Write the properties of vector products of two vectors.
2. Write down the kinematic equations for angular motion.
3. Write down the expression for angle made by resultant acceleration and radius vector in the non-uniform circular motion.
4. Write the properties of scalar products of two vectors. (MAR 23,JUNE 24)
5. Show that path of a projectile is a parabola in horizontal projection. (JULY 22)
6. An object is thrown with initial speed 5𝑚𝑠−1 with an angle of projection 30o.Calculate the maximum height reached and the
horizontal range. (CH-2,Ex:16) (MAR 24)
7. A train was moving at the rate of 54 km h-1 when brakes were applied. It came to rest within a distance of 225m. Calculate
the retardation produced in the train. (Example 2.36) (SEP 20,JUN 23)
8. What are the resultants of the vector product of two given vectors given by A=4i 2 j k and B=5i 3 j 4k ? (CH-2,
Ex:5) (MAY 22)
9. An object is thrown with initial speed 5𝑚𝑠−1 with an angle of projection 30o.Calculate the maximum height reached and the
horizontal range. (CH-2,Ex:16) (MAR 20)
10. The position vectors particle has length 1m and makes 30 o with the x-axis. What are the lengths of the x and y components
of the position vector? (CH-2, Ex:1) (JUNE 19)
11. A ball is thrown vertically upwards with the speed of 19.6m𝑠−1 from the top of a building and reaches the Earth in 6𝑠. Find
the height of the building. (MAR 19)
12. The position vector and angular velocity of a particle executing uniform circular motion at an instant are 2𝑖 𝑎𝑛𝑑 4𝑘
respectively. Find the linear velocity at that instant. ( 𝑣 = 𝜔 𝑥 𝑟) (SEP 20)
5-Marks
1. Explain in detail the triangle law of addition. (JUNE 19,22,MAR 23)
2. Derive the kinematic equations of motion for constant acceleration. (SEP 20,MAY 22,JUNE 23, MAR 24)
3. Derive the equations of motion for a particle (a) falling vertically (MAR 19) (b) projected vertically
4. Derive the equation of motion, range and maximum height reached by the particle thrown at an oblique angle q with respect
to the horizontal direction.
5. Derive the expression for centripetal acceleration. (MAR 20,JUNE 24)
6. Derive the expression for total acceleration in the non-uniform circular motion.
CHAPTER-3
2-Marks
1. State Newton‟s second law. (MAR 19, MAY 22)
2. Define one newton. (JUNE 24)
3. What is the meaning by „pseudo force‟? (JUNE 23)
4. State Newton‟s third law.
5. What are inertial frames?
6. Under what condition will a car skid on a leveled circular road? (MAR 23)
7. Define inertia. (JULY 22)
8. If a stone of mass 0.25 kg tied to a string executes uniform circular motion with a speed of 2 ms-1 of radius 3 m, what is the
magnitude of tensional force acting on the stone? (Example 3.22)
9. A car takes a turn with velocity 50 ms-1 on the circular road of radius of curvature 10 m. calculate the centrifugal force
experienced by a person of mass 60kg inside the car? (CH-3,Ex:14) (JUNE 23,MAR 19,24)
3-Marks
1. Explain the concept of inertia. Write two examples each for inertia of motion, inertia of rest and inertia of direction.
2. Show that impulse is the change of momentum.
3. Using free body diagram, show that it is easy to pull an object than to push it. (MAY 22,JUNE 24)
4. Explain various types of friction. Suggest a few methods to reduce friction. (MAR 19)
PREPARED BY: M.PRABAKARAN (PGT-PHYSICS) 2
SRI VIVEKANANDA HR SEC SCHOOL, EARVAIPATTINAM, KALLAKURICHI.
SUBJECT: PHYSICS CHAPTERWISE IMPORTANT QUESTIONS
CHAPTER-1
2-Marks
1. Define precision and accuracy. Give examples.
2. Write any two errors systematic errors. Explain them. (MAR 19)
3. Define unit.
4. Define Dimensional variables. (SEP 20)
5. Define Dimensionless variables. (SEP 20)
6. Define Dimensional constant.
7. Define Dimensionless constant.
8. What is principle of homogeneity of dimensions? Give example. (MAR 19,JUNE 23,24)
9. In a submarine equipped with sonar, the time delay between the generation of a pulse and its echo after reflection from an
enemy submarine is observed to be 80s. If the speed of sound in water is 1460ms-1. What is the distance of enemy
submarine? (Ex:1,CH-1) (MAY 22)
10. From a point on the ground, the top of a tree is seen to have an angle of elevation 60°. The distance between the tree and a
point is 50m. Calculate the height of the tree? (MAR 20)
11. Check the correctness of the equation 1/2 mv2= mgh using dimensional analysis method. (Exam 1.12) (MAR 20,MAY 22)
12. Check the following equation by dimensional method 𝐸 = 𝑚𝑐2. (JUNE 19)
3-Marks
1. How will you measure the diameter of the Moon using parallax method?
2. Write the rules for determining significant figures. (MAR 23)
3. What are the limitations of dimensional analysis? (JUNE 19, 22, MAR 24)
4. Write the rules for determining Rounding – off
5. Write the application of Dimensional analysis. (SEP 20,MAY 22)
6. What are Gross errors? State the reasons for it and how to minimize the error. (JULY 22,MAR 23)
7. What are fundamental and derived quantities? Give examples. (SEP 20,MAR 24)
8. A RADAR signal is beamed towards a planet and its echo is received 7 minutes later. If the distance between the planet and
the Earth is 6.3 × 1010 m. Calculate the speed of the signal? (JUNE 24)
5-Marks
1. Explain in detail the various types of errors. (JUNE 23,24)
2. What do you mean by propagation of errors? Explain the propagation of errors in addition and multiplication.
3. Write a note on triangulation method (JUNE 23) and radar method to measure larger distances. (MAR 20,JULY 22,23,24)
4. Assuming that the frequency γ of a vibrating string may depend upon i) applied force (F) ii) length (l) iii) mass per unit
length (m), prove that γα 1 F using dimensional analysis. (CH:1,Ex-3) (MAR 2024)
l m
5. Obtain an expression for the time period T of a simple pendulum. The time period T depends on (i) mass „m‟ of the bob (ii)
length „l‟ of the pendulum and (iii) acceleration due to gravity g at the place where the pendulum is suspended. (Constant k
= 2π) (Example 1.15) (MAR 23)
6. Express 76 𝑐m of mercury pressure in terms of 𝑁m−2 using the method of dimensions. (SEP 20)
7. What do you mean by propagation of errors? Explain propagation of errors in division of two quantities. (MAR 20)
8. In a series of successive measurements in an experiment, the readings of the period of rotation of a wheel were found to be
2.15s, 2.25s, 2.28s and 2.32s. Calculate (i) the mean value of the period of rotation (ii) the absolute error in each
measurement (iii) The mean absolute error (iv) The relative error (v) The percentage error. Express the result in proper
form. (model Example 1.14) (JUNE 19)
9. Derive an expression for the force F acting on a body moving in a circular path depends on mass of the body (m), velocity
(v) and radius (r) of the circular path. Obtain the expression for the force by dimensional analysis method. (Take the value of
k=1) (MAR 19)
CHAPTER-2
2-Marks
1. Define a vector. Give examples. (JUN 19,MAR 24)
2. Define a scalar. Give examples. (JUN 19,MAR 23)
3. Define displacement and distance. (MAR 20)
4. Define velocity and speed.
5. Define acceleration.
6. What is the difference between velocity and average velocity? (JUNE 23)
PREPARED BY: M.PRABAKARAN (PGT-PHYSICS) 1
SRI VIVEKANANDA HR SEC SCHOOL, EARVAIPATTINAM, KALLAKURICHI.
, STD : XI
SUBJECT: PHYSICS CHAPTERWISE IMPORTANT QUESTIONS
7. Define a radian.
8. Define angular displacement and angular velocity.
9. What is non-uniform circular motion?
10. What is projectile? Give two examples. (MAR 19)
11. Consider two trains A and B moving along parallel tracks with the same velocity in the same direction. Let the velocity of
each train be 50 km h-1 due east. Calculate the relative velocities of the trains. (Example 2.28) (JULY 22)
12. A particle moves along the x-axis in such a way that its coordinates x varies with time ‟t” according to the equation
𝑥=2−5𝑡+6𝑡2. What is the initial velocity of the particle? (Example 2.25) (MAY 22)
13. A particle is in circular motion with an acceleration α=0.2rads-2. (a) What is the angular displacement made by the particle
after 5 s? (b) What is the angular velocity at t = 5 s? Assume the initial angular velocity is zero. (Example 2.41) (JUNE 24)
3-Marks
1. Write the properties of vector products of two vectors.
2. Write down the kinematic equations for angular motion.
3. Write down the expression for angle made by resultant acceleration and radius vector in the non-uniform circular motion.
4. Write the properties of scalar products of two vectors. (MAR 23,JUNE 24)
5. Show that path of a projectile is a parabola in horizontal projection. (JULY 22)
6. An object is thrown with initial speed 5𝑚𝑠−1 with an angle of projection 30o.Calculate the maximum height reached and the
horizontal range. (CH-2,Ex:16) (MAR 24)
7. A train was moving at the rate of 54 km h-1 when brakes were applied. It came to rest within a distance of 225m. Calculate
the retardation produced in the train. (Example 2.36) (SEP 20,JUN 23)
8. What are the resultants of the vector product of two given vectors given by A=4i 2 j k and B=5i 3 j 4k ? (CH-2,
Ex:5) (MAY 22)
9. An object is thrown with initial speed 5𝑚𝑠−1 with an angle of projection 30o.Calculate the maximum height reached and the
horizontal range. (CH-2,Ex:16) (MAR 20)
10. The position vectors particle has length 1m and makes 30 o with the x-axis. What are the lengths of the x and y components
of the position vector? (CH-2, Ex:1) (JUNE 19)
11. A ball is thrown vertically upwards with the speed of 19.6m𝑠−1 from the top of a building and reaches the Earth in 6𝑠. Find
the height of the building. (MAR 19)
12. The position vector and angular velocity of a particle executing uniform circular motion at an instant are 2𝑖 𝑎𝑛𝑑 4𝑘
respectively. Find the linear velocity at that instant. ( 𝑣 = 𝜔 𝑥 𝑟) (SEP 20)
5-Marks
1. Explain in detail the triangle law of addition. (JUNE 19,22,MAR 23)
2. Derive the kinematic equations of motion for constant acceleration. (SEP 20,MAY 22,JUNE 23, MAR 24)
3. Derive the equations of motion for a particle (a) falling vertically (MAR 19) (b) projected vertically
4. Derive the equation of motion, range and maximum height reached by the particle thrown at an oblique angle q with respect
to the horizontal direction.
5. Derive the expression for centripetal acceleration. (MAR 20,JUNE 24)
6. Derive the expression for total acceleration in the non-uniform circular motion.
CHAPTER-3
2-Marks
1. State Newton‟s second law. (MAR 19, MAY 22)
2. Define one newton. (JUNE 24)
3. What is the meaning by „pseudo force‟? (JUNE 23)
4. State Newton‟s third law.
5. What are inertial frames?
6. Under what condition will a car skid on a leveled circular road? (MAR 23)
7. Define inertia. (JULY 22)
8. If a stone of mass 0.25 kg tied to a string executes uniform circular motion with a speed of 2 ms-1 of radius 3 m, what is the
magnitude of tensional force acting on the stone? (Example 3.22)
9. A car takes a turn with velocity 50 ms-1 on the circular road of radius of curvature 10 m. calculate the centrifugal force
experienced by a person of mass 60kg inside the car? (CH-3,Ex:14) (JUNE 23,MAR 19,24)
3-Marks
1. Explain the concept of inertia. Write two examples each for inertia of motion, inertia of rest and inertia of direction.
2. Show that impulse is the change of momentum.
3. Using free body diagram, show that it is easy to pull an object than to push it. (MAY 22,JUNE 24)
4. Explain various types of friction. Suggest a few methods to reduce friction. (MAR 19)
PREPARED BY: M.PRABAKARAN (PGT-PHYSICS) 2
SRI VIVEKANANDA HR SEC SCHOOL, EARVAIPATTINAM, KALLAKURICHI.
