Here are some important questions and answers for 10thstandard
Science Maharashtra Board Examination:
Physics
1. State Newton’s Universal Law of Gravitation.
Every object in the universe attracts every other object with a force
which is directly proportional to the product of their masses and
inversely proportional to the square of the distance between their
centres.
2. Explain the concept of refraction of light.
The change in the direction of propagation of light when it passes
obliquely from one transparent medium to another is called
refraction of light.
3.State Ohm’s Law.
The current passing through a conductor is directly proportional to
the potential difference across its ends, provided the temperature
remains constant.
V = IR
Where V = voltage, I = current, R = resistance.
4.What is the difference between distance and displacement?
Distance is the total length of the path travelled, while displacement
is the shortest distance between the initial and final positions.
5. Explain the concept of work and energy.
Work is the product of force and displacement, while energy is the
ability to do work.
, 6. What is the principle of conservation of momentum?
The total momentum of a closed system remains constant if no
external forces act on it.
7. Explain the concept of sound waves.
Sound waves are longitudinal waves that propagate through a
medium, causing compression and rarefaction.
8.What is the difference between reflection and refraction of light?
Reflection is the bouncing back of light, while refraction is the
bending of light as it passes from one medium to another.
9) Define electric power and write its formula.
Electric power is the rate at which electrical energy is consumed.
P = VI
Also, P = I²R and P = V²/R
Unit: Watt (W)
10) State mirror formula.
The mirror formula is:
1/f = 1/v + 1/u
Where f = focal length, v = image distance, u = object distance.
11.Define corrosion.
Corrosion is the slow destruction of metals due to reaction with air and
moisture. Example: Rusting of iron.
Science Maharashtra Board Examination:
Physics
1. State Newton’s Universal Law of Gravitation.
Every object in the universe attracts every other object with a force
which is directly proportional to the product of their masses and
inversely proportional to the square of the distance between their
centres.
2. Explain the concept of refraction of light.
The change in the direction of propagation of light when it passes
obliquely from one transparent medium to another is called
refraction of light.
3.State Ohm’s Law.
The current passing through a conductor is directly proportional to
the potential difference across its ends, provided the temperature
remains constant.
V = IR
Where V = voltage, I = current, R = resistance.
4.What is the difference between distance and displacement?
Distance is the total length of the path travelled, while displacement
is the shortest distance between the initial and final positions.
5. Explain the concept of work and energy.
Work is the product of force and displacement, while energy is the
ability to do work.
, 6. What is the principle of conservation of momentum?
The total momentum of a closed system remains constant if no
external forces act on it.
7. Explain the concept of sound waves.
Sound waves are longitudinal waves that propagate through a
medium, causing compression and rarefaction.
8.What is the difference between reflection and refraction of light?
Reflection is the bouncing back of light, while refraction is the
bending of light as it passes from one medium to another.
9) Define electric power and write its formula.
Electric power is the rate at which electrical energy is consumed.
P = VI
Also, P = I²R and P = V²/R
Unit: Watt (W)
10) State mirror formula.
The mirror formula is:
1/f = 1/v + 1/u
Where f = focal length, v = image distance, u = object distance.
11.Define corrosion.
Corrosion is the slow destruction of metals due to reaction with air and
moisture. Example: Rusting of iron.
