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Class 9
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Simple Pendulum - Amplitude and Time period
Simple Pendulum - Amplitude and Time period
Theory
Theory
Procedure
Animation
Simulator
Viva Voce
Resources
1)
Identify the wrong feature of the thread used in a simple pendulum
elastic
flexible
weightless
inextensible
2)
The maximum displacement of the pendulum bob from the mean position is
Time period
Frequency
Angular displacement
Amplitude
3)
A seconds pendulum is a pendulum with the time period
1 s
2 s
0.5 s
10 s
4)
The effective length of the simple pendulum is
Half the length of the pendulum thread
Length of the pendulum thread and the radius of the bob
Length of the pendulum thread and the diameter of the bob
Length of the pendulum thread
5)
A motion that repeats after equal intervals of time is
Parabolic motion
Straight-line motion
Rectilinear motion
Periodic motion
6)
If the frequency is doubled, then the time period
also doubles
remains same
becomes half
becomes 4 times
7)
The metallic bob in a simple pendulum was replaced by a wooden bob, the time period T
becomes doubles
Remains same
increases
decreases
8)
While oscillating, the amplitude of the simple pendulum
must be very large
must be very small
should be equal to the length of the simple pendulum
can take any value
9)
The relationship between the length of a simple pendulum L to its time period T is given by-
L is proportional to 1/T
L is proportional to T²
L is proportional to T
L is proportional to 1 / T²
10)
Unit of frequency is
Hertz
Joule
second
Pascal
11)
The shape of the L – T² graph is
A curve
A circle
An increasing straight line
A decreasing straight line
12)
The time period of a simple pendulum depends on
length of the pendulum only
length of the pendulum and angular displacement
length of the pendulum and mass of the bob
the amplitude of the pendulum
13)
The bob used in the simple pendulum must be -
Small and light bob
Small and heavy to reduce the effect of air resistance
Large and light
Large and heavy to reduce the effect of air resistance
14)
The pendulum bob of a specific type is chosen to
decrease the speed of pendulum motion
increase the effect of air resistance
increase the length of the simple pendulum
reduce the effect of air resistance
15)
The speed of the pendulum bob is
Maximum at the mean position
Maximum at the extreme position
Constant throughout the motion
Zero at the mean position
16)
It is known that metals expand on increasing the temperature. If a pendulum clock on the wall is made of some metallic wire attached to a small bob, it will be found that in summer the time period of the pendulum
decreases
increases
will increase at first and then decrease
remains same as before