1561. Oscillatory motion is a type of motion which is :

A. To and Fro
B. Vibratory motion
C. Periodic motions
D. All of these *

1562. The body oscillates due to a :

A. Applied force
B. Restoring force *
C. Frictional force
D. Air pressure

1563. In vibratory motion which parameter remains constant ?

A. P.E. Energy
B. K.E. Energy
C. Total Energy *
D. Angular Energy

1564. The vibrating bodies produce :

A. Sound
B. Waves
C. Disturbance
D. All of these *

1565. Hook’s law is defined as :

A. F and X are directly proportional *
B. F and X are inverse proportional
C. F and X has no relation
D. Product of F and X is proportional to friction

1566. The frequency of second pendulum is :

A. 1 Hertz
B. 2 Hertz
C. 1/2 Hertz *
D. None of them

1567. Which of the following factors imparts in simple harmonic motion:

A. Acceleration is directly proportional to displacement
B. Acceleration is directed towards the mean position
C. Acceleration produced is due to restoring force
D. All of the above *

1568. If a simple pendulum is shifted from Multan to mount everest , then its time period :

A. Increases *
B. Decreases
C. Remains constant
D. Becomes zero

1569. On vibration means, the motion of mas from its :

A. Means position to upper extreme position
B. Frome extreme position
C. From means position to back to its means position *
D. All of these

1570. Frequency is the term used for :

A. Number of vibration for second *
B. Time to take one vibration
C. Number of Vibrations per minute
D. None of these