quiz physics sec 2 chapter 1

If the covering distance during a complete motion of the simple pendulum is 10 cm then the amplitude of its vibration is ......... cm

• 20

• 10

• 2.5

• 40

the frequency of a vibrating object which makes 200 complete vibration through 200 millisecond is ........... Hz

• 400

• 1000

• 10 ^-3

• 1

If the distance between the third crest and the tenth crest of a transverse wave is 21 cm then the distance between the second trough and the third trough is ...... cm

• 3

• 21

• 7

• 14

if the ratio between the frequency and the periodic time equal 144 Hz ² then periodic time equal ........... sec

• 12

• 1/12

• 6

• 1/144

A vibrating body makes 1200 complete oscillations in one minutes, and the distance covered through 10 complete oscillation equal 25 cm then the velocity of its oscillation is ..

• 50 m/s

• 250 m/s

• 0.5 cm/s

• 50 cm/s

If the distance between successive compression and rarefaction is 1.7 m and the time between them is 0.1 sec then the wave velocity = ....... m/s

• 0.68

• 0.34

• 0.17

• 17

when the velocity of a sound wave travels from air to another medium increased 4 times its value then ........

• frequency constant and wave length decreased to 1/4

• frequency constant and wave length increased 4 times

• frequency increased 4 times and wave length constant

• frequency increased to its double value and wave length increased to its double value

In a Transverse wave, if the time interval for a point to move from the maximum displacement to zero is 0.17 sec then the wave frequency is ...... Hz

• 0.36

• 0.73

• 2.94

• 1.47

A girl stood on the beach to watch the waves. she observed that every two seconds , four waves hit a rock in front of her , and each wave has a length of 0.5 m . so the wave speed is .... m/s

• 0.2

• 0.25

• 0.5

• 1

two sound waves of frequency 300 Hz , 600 Hz then the ratio between their wave lengths is .....

• 1:1

• 1:2

• 2:1

• 3:1