Chapter 8 - Waves - 1

Chapter 8 - Waves - 1

1. The wave speed is given by:-

a) V = Tl
b) V = f / l
c) V = f l
d) V = T / l

2. If 20 waves passes through the medium in 1 second with speed of 20 ms^-1 then wavelength is:-

a) 2m
b) 400m
c) 20m
d) 1m

3. The waves in which particles of the medium vibrate parallel to direction of motion are called:-

a) Transverse waves
b) Stationary waves
c) Directional waves
d) Longitudinal waves

4. The phemenon of passing of waves from one medium into another medium is called:-

a) Diffraction
b) Refraction
c) Transmission
d) Reflection

5. The distance between two adjacent nodes is:-

a) l / 4
b) l
c) l / 2
d) 2l

6. The number of nodes between two consecutive antinodes is:-

a) 2
b) 1
c) 3
d) Zero

7. The presence of stationary waves on a string can be easily detected as the motion will be zero at:-

a) None of these
b) Between node and antinode
c) Nodal points
d) Antinodal points

8. In standing waves if l = l (length of string) then loops will be:-

a) 3
b) 4
c) 1
d) 2

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