# Simple Harmonic Motion Test

The length of the second pendulum on the surface of earth is 1 m. The length of seconds pendulum on the surface of moon, where g is value of g on the surface of earth, is ____.

36 m

6 m

If the length of second's pendulum is decreased by 2 %, how many seconds it will lose per day ____.

864 s

3427 s

3727 s

3927 s

The period of simple pendulum is measured as T in a stationary lift. If the lift moves upwards with an acceleration of 5 g, the period is ____.

None of the above

decreased by 2 / 3 times

increased by 3 / 5

the same

The length of a simple pendulum is increased by 1%. Its time period will ____.

increase by 2 %

decrease by 0.5 %

increase by 0.5 %

increase by 1 %

A simple pendulum with a bob of mass ‘m’ oscillates from A to C and back to A such that PB is H. If the acceleration due to gravity is ‘g’, then the velocity of the bob as it passes through B is ____.

Zero

Identify correct statement among the following ____.

the fractional change in the time period of a pendulum on changing the temperature is independent of the length of the pendulum

as the length of a simple pendulum is increased, the maximum velocity of its bob during its oscillation will also decreases

the greater the mass of a pendulum bob, the shorter is its frequency of oscillation

The bob of a pendulum of length l is pulled aside from its equilibrium position through an angle and then released. The bob will then pass through its equilibrium position with a speed v, where v equals ____.

A simple pendulum executing S.H.M. is falling freely along with the support. Then ____.

None of the above

it does not oscillate at all

its periodic time increases

its periodic time decreases

A pendulum bob has a speed of 3 m/s at its lowest position. The pendulum is 0.5 m long. The speed of the bob, when the length makes an angle of to the vertical, is (If ) ____.

The time period of a simple pendulum is 2 s. If its length is increased 4 times, then its period becomes ____.

4 s

8 s

12 s

16 s

If the metal bob of a simple pendulum is replaced by a wooden bob, then its time period will ____.

first increase then decrease

remain the same

decrease

increase

In a simple pendulum, the period of oscillation T is related to length of the pendulum l as ____.

A pendulum has time period T. If it is taken on to another planet having acceleration due to gravity half and mass 9 times that of the earth then its time period on the other planet is ____.

T

A simple pendulum is executing simple harmonic motion with a time period T. If the length of the pendulum is increased by 21%, the percentage increase in the time period of the pendulum of increased length is ____.

50 %

30 %

21 %

10 %

If the length of simple pendulum is increased by 300 %, then the time period is increased by ____.

400 %

300 %

200 %

100 %

The length of a second’s pendulum is ____.

None of the above

100 cm

99 cm

99.8 cm

The time period of a simple pendulum in a lift descending with constant acceleration g is ____.

Infinite

Zero

A plate oscillated with time period ‘T’. Suddenly, another plate put on the first plate, then time period ____.

None of the above

is same

will increase

will decrease

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**Description:**

Another test on SHM of Physics

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