Question

3. Which of the following is a mechanical wave?
(a) Radio waves
(b) Sound waves
(c) Light waves
(d) Microwaves
4. Echo is due to reflection of:
(a) light waves (b) radio waves
(c) sound waves
(d) infrasonics
5. Waves transfer X from one place to another, where 'X' is:
(a) mass
(b) velocity
(c) energy
(d) wavelength
6. When a bell rings continuously. The wave produced in air is:
(a) transverse wave
(b) electromagnetic wave
(c) pulse
(d) longitudinal wave
7. A weight is suspended from a flexible spring which is tied rigidly to a wall. It is released and then left. the wave produced in spring is:
a.pulse
b.transverse
c.energy
d. wavelength
​

Answer 1

3. (b)

4. (c)

5. ?

6. (d)

7. (b)