oscillatory motion

what's the frequecny of the following wave

• 1 Hz

• 2 Hz

• 1/2 Hz

• 4 Hz

If the pendulum completes exactly 12 cycles in

2 min, what is the periodic time of the pendulum

• 1/6 sec

• 6 sec

• 1/10 sec

• 10 sec

The following is a pendlum vibrates between points Q & P which of the following is incorrect

• KE=0 at R

• PE is max at P&Q

• KE is max at R

• mechanical energy at Q = mechanical energy at R

To quadrable the frequency of an oscillator, we have to..........

• double number of vibrations

• decreasing preiodic time to half

• double both of number of vibrations and preiodic time

• double the number of vibrations and decreasing preiodic time to half

a spring completes 4 oscillations in 5 sec. what's the periodic time?

• 1.25 s

• 0.4 s

• 1 s

• 0.8 s

if 51 water wave crests pass by a certain point in 3.4 s waht's the frequecny of the wave

• 15 Hz

• 50.6 Hz

• 57.4 Hz

• 173.4 Hz

what's the frequency of the folloiwng wave

• 10 Hz

• 1/10 Hz

• 5 Hz

• 1/5 Hz

What's the time between points a and b knowing that the frequency is 60 Hz

• 1/45 s

• 1/80 s

• 1/60 s

• 1/120 s

if a simple pendulum takes 0.015 s to reach max displacement for the second time starting from the rest position. what's the required time to make 100 oscillations?

• 2 s

• 4 s

• 6 s

• 8 s

the periodic time of a pendulum has a spherical bob of mass 50 gm is 2 sec When the bob is replaced by another of 100 gm the new periodic time will be.......

• 1 sec

• 2 sec

• 4 sec

• 8 sec