,Oriental Public School Mardan Physics Class 10th
Oriental Public School
Malakand Road Mardan
Phone: 0937-867630 , 861416
www.oriental.edu.pk
www.opsmardan.org.pk
www.facebook.com/orientalmardan
orientalmardan.yahoo.com
Page |1
,Oriental Public School Mardan Physics Class 10th
Chapter No: 10
(Topic Wise Questions)
Q.1. Define oscillatory motion. Explain with examples.
Ans. OSCILLATORY MOTION
“The to and fro motion of a body about its mean position is called oscillatory
motion”.
OR
“The back and forth motion of a body about its mean position (equilibrium) is
called oscillatory motion”
Explanation:-
The oscillatory motion is also known as vibratory motion. The mean position or
equilibrium position is the original or initial position of the body in the absence of
applied force.
If a body moves back and forth over the same path, then such a motion is called
oscillatory motion.
EXAMPLES:-
1. Motion of a body attached to an elastic spring.
2. Motion of wires of sitar.
3. Motion of simple pendulum.
Q.2. Define periodic motion. Explain with examples. Find the relation
between the frequency and time period of a periodic motion.
Ans. PERIODIC MOTION:
“The motion which repeats itself in equal interval of time is known as periodic
motion.”
EXAMPLES:-
1. Motion of simple pendulum is an example of periodic motion it repeat itself in
equal interval of time about mean position.
2. Motion of mass spring system is the example of periodic motion.
3. Motion of metallic strip is periodic motion.
Relation between frequency and time period
If T represents the time period and f represent. The frequency, then we have the
relation
1
f=
T
Q.3. Define the following terms. (i) Vibration or cycle (ii) Time period
(iii) Displacement (iv) Frequency (v) Amplitude
Ans. VIBRATION / CYCLE:-
“A complete round trip of an oscillating body about its mean position is known
as vibration (OR) cycle”
EXAMPLE:-
In the motion of a simple pendulum the, body move from point A to A and then from
A to A is one complete cycle or vibration.
TIME PERIOD:-
“The time taken by a body to complete one vibration (or) cycle is known as time
period” it is denoted by ―T‖ and its SI unit is sec.
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, Oriental Public School Mardan Physics Class 10th
MATHEMATICAL FORM:-
1
T=
f
FREQUENCY:-
“The number of vibration in one second is known as frequency”. It is represented
by ―f‖ and its SI unit is hertz (HZ).
MATHEMATICAL FORM:-
N
f=
t
DISPLACEMENT:-
“The straight distance of a vibrating body from mean position is known as
displacement” it is represented by ―x‖ and its unit is meter (m)
AMPLITUDE:-
“The maximum displacement of a vibrating body from mean position is known
as amplitude.” It is represented by ―xo‖. The amplitude is measure in meter (m)
WAVE LENGTH:-
“The shortest distance between points where the pattern repeats itself is called
wavelength”
OR
“The distance covered by a wave in one time period “T” is called wavelength” It
is represented by ―‖ its unit is meter (m)
Page |3
Oriental Public School
Malakand Road Mardan
Phone: 0937-867630 , 861416
www.oriental.edu.pk
www.opsmardan.org.pk
www.facebook.com/orientalmardan
orientalmardan.yahoo.com
Page |1
,Oriental Public School Mardan Physics Class 10th
Chapter No: 10
(Topic Wise Questions)
Q.1. Define oscillatory motion. Explain with examples.
Ans. OSCILLATORY MOTION
“The to and fro motion of a body about its mean position is called oscillatory
motion”.
OR
“The back and forth motion of a body about its mean position (equilibrium) is
called oscillatory motion”
Explanation:-
The oscillatory motion is also known as vibratory motion. The mean position or
equilibrium position is the original or initial position of the body in the absence of
applied force.
If a body moves back and forth over the same path, then such a motion is called
oscillatory motion.
EXAMPLES:-
1. Motion of a body attached to an elastic spring.
2. Motion of wires of sitar.
3. Motion of simple pendulum.
Q.2. Define periodic motion. Explain with examples. Find the relation
between the frequency and time period of a periodic motion.
Ans. PERIODIC MOTION:
“The motion which repeats itself in equal interval of time is known as periodic
motion.”
EXAMPLES:-
1. Motion of simple pendulum is an example of periodic motion it repeat itself in
equal interval of time about mean position.
2. Motion of mass spring system is the example of periodic motion.
3. Motion of metallic strip is periodic motion.
Relation between frequency and time period
If T represents the time period and f represent. The frequency, then we have the
relation
1
f=
T
Q.3. Define the following terms. (i) Vibration or cycle (ii) Time period
(iii) Displacement (iv) Frequency (v) Amplitude
Ans. VIBRATION / CYCLE:-
“A complete round trip of an oscillating body about its mean position is known
as vibration (OR) cycle”
EXAMPLE:-
In the motion of a simple pendulum the, body move from point A to A and then from
A to A is one complete cycle or vibration.
TIME PERIOD:-
“The time taken by a body to complete one vibration (or) cycle is known as time
period” it is denoted by ―T‖ and its SI unit is sec.
Page |2
, Oriental Public School Mardan Physics Class 10th
MATHEMATICAL FORM:-
1
T=
f
FREQUENCY:-
“The number of vibration in one second is known as frequency”. It is represented
by ―f‖ and its SI unit is hertz (HZ).
MATHEMATICAL FORM:-
N
f=
t
DISPLACEMENT:-
“The straight distance of a vibrating body from mean position is known as
displacement” it is represented by ―x‖ and its unit is meter (m)
AMPLITUDE:-
“The maximum displacement of a vibrating body from mean position is known
as amplitude.” It is represented by ―xo‖. The amplitude is measure in meter (m)
WAVE LENGTH:-
“The shortest distance between points where the pattern repeats itself is called
wavelength”
OR
“The distance covered by a wave in one time period “T” is called wavelength” It
is represented by ―‖ its unit is meter (m)
Page |3
