11)

The lowest possible natural frequency of a system is called as

Class 11 Physics

A)

Second harmonic

B)

First harmonic

C)

Fundamental mode

D)

Both a and b

12)

Nodes are the point at which amplitude is

Class 11 Physics

A)

Zero

B)

Maximum

C)

Minimum

D)

Infinity

13)

The distance between any two successive nodes is

Class 11 Physics

A)

2/wavelength

B)

Wavelength/3

C)

Wavelength/2

D)

3/wavelength

14)

The frequency for which n = 3 is called as

Class 11 Physics

A)

Third harmonic

B)

Second harmonic

C)

First harmonic

D)

Fundamental mode

15)

Frequency of the wave is measured in

Class 11 Physics

A)

Hz

B)

Rad

C)

Meter

D)

None

16)

The maximum displacement of the particle of the wave from its mean or equilibrium position is called as

Class 11 Physics

A)

Distance

B)

Epoch

C)

Phase

D)

Amplitude

17)

Sound waves are the

Class 11 Physics

A)

Both a and b

B)

Longitudinal waves

C)

Transverse waves

D)

None

18)

______ waves can travel through vacuum.

Class 11 Physics

A)

Radio waves

B)

Light waves

C)

Sound waves

D)

Both b and c

19)

Which of the following are mechanical waves

Class 11 Physics

A)

Seismic waves

B)

Sound waves

C)

Water waves

D)

All

20)

The speed of electromagnetic waves is

Class 11 Physics

A)

299, 792, 458 cm/s

B)

299, 792, 458 km/s

C)

299,792,458 m/s

D)

None