September exam phy. sec.2 term 1

Which motion of the following represents a complete oscillation for the given simple pendulum?

• C ---> B ---> A ---> B

• A ---> B ---> C ---> B ---> A

• A ---> B ---> C ---> B

• B ---> C ---> B ---> A

If the frequency of an oscillating body is 6 HZ, the periodic time is .................... sec.

• 3

• 6

.................... is (are) mechanical waves.

• water waves only

• sound waves only

• microwaves only

• water waves and sound waves

A simple pendulum oscillate in simple harmonic motion. Time taken for the pendulum complete 10 oscillation is 5 seconds. Calculate the period of the motion.

• 0.5 s

• 2π/5 s

• 10 s

• 0.1 s

in the opposite figure, when the ball of the pendulum moves from (X) to (Y) in a duration of 0.25 seconds , the frequency equal …

• 0.04

• 0.25

• 2

• 4

In the opposite figure,if the maximum displacement done by the spring away from its rest position is 3 cm. Using the figure calculate :

the vertical distance covered by the spring through 3 complete oscillations equals…cm

• 3

• 12

• 24

• 36

In the opposite figure,if the maximum displacement done by the spring away from its rest position is 3 cm. Using the figure calculate : the frequency of spring equals…….Hz

• 0.2

• 0.4

• 2.5

• 5

The kinetic energy of the simple pendlum decreases by increasing distance from rest point

• Right
• Wrong

What do all waves transfer?

• Matter

• Heat

• Electricity

• Energy

Which type of waves have the longest wavelength?

• Visible light

• Radio waves

• X-rays

• Gamma-Rays