## Simple Pendulum - MCQ - Basic Level

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of Basic Level Questions on Simple Pendulum. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1.  A simple pendulum has time period T. The bob is given negative charge and surface below it is given positive charge. The new time period will be

•  Less than T
•  Greater than T
•  Equal to T
•  Infinite

Q2. In a seconds pendulum, mass of the bob is 30 gm. If it is replaced by 90 gm mass. Then its time period will be

•  1 sec
•  2 sec
•  4 sec
•  3 sec

Q3. The bob of a simple pendulum executes simple harmonic motion in water with a period t, while the period of oscillation of the bob is t0 in air. Neglecting frictional force of water and given that the density of the bob is 4/3 x 1000 kg/m3. Which relationship between t and t0 is true

•  t = t0
•  t = t0/2
•  t = 2t0
•  t = 4t0

Q4. Two simple pendulum of length 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed… Oscillations

•  5
•  1
•  2
•  3

Q5. A chimpanzee swinging on a swing in a sitting position, stands up suddenly, the time period will

•  Become infinite
•  Remain same
•  Increase
•  Decrease

Q6. A simple pendulum of length l has a brass bob attached at its lower end. Its period is T. If a steel bob of same size, having density x times that of brass, replaces the brass bob and its length is changed so that period becomes 2T, then new length is

•  2 l
•  4 l
•  4 lx
•  4 l/x

Q7. A hollow sphere is filled with water through a small hole in it. It is then hung by a long thread and made to oscillate. As the water slowly flows out of the hole at the bottom, the period of oscillation will

•  Continuously decrease
•  Continuously increase
•  First decrease and then increase
•  First increase and then decrease

Q8. The period of oscillation of a simple pendulum of constant length at earth surface is T. Its period inside a mine is

•  Greater than T
•  Less than T
•  Equal than T
•  Cannot be compared

Q9. If the length of simple pendulum is increased by 300%, then the time period will be increased by

•  100%
•  200%
•  300%
•  400%

Q10. If the length of second’s pendulum is decreased by 2%, how many seconds it will lose per day

•  3927 sec
•  3727 sec
•  3427 sec
•  864 sec

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