SOUND (mcq--1)

Question No. 1

Crests and troughs are formed in

Transverse wave both Transverse wave and Longitudinal wave none of these. Longitudinal wave

Question No. 2

X – rays, light rays are electromagnetic waves is a

False statement Partially false Partially True True statement

Question No. 3

Statement A: Speed of sound is same at different temperature. Statement B: Loudness is measured in decibels. Which of the two statements is true?

None of these Statement B Statement A Both a and b

Question No. 4

Frequency of infrasonic waves is ____________ than frequency of ultrasound waves.

less more none of these. almost same

Question No. 5

Sound wave is a

none of these. transverse wave longitudinal wave both a and b

Question No. 6

The velocity, wavelength and time period of a wave are related as

V=λ/T V=λT T=λV none

Question No. 7

A bat hears the echo of its squeak after 0.1 second . How far is the obstacle from the bal? Speed of sound is 344 m/s.

180m 18m 170m 17.2m

Question No. 8

The eardrum is a

coiled tube fluid bone a stretched membrane.

Question No. 9

The upper limit of frequency of sound waves audible to human beings are

20Hz 5Hz 20,000Hz 35,000Hz.

Question No. 10

The distance between a consecutive crest and trough is x. The wavelength of the wave is

x2 4x  2x x

Question No. 11

Sonar stands for ______

Sound native and ranging none of these. Sound navigation and ranging Sound notation and ranging

Question No. 12

The maximum displacement of the particle of the mean from its mean position is called the

wave number Amplitude wavelength none of these

Question No. 13

The multiple reflection of sound in a hall is called

Scanning All of these Echo reverberation

Question No. 14

Children can hear sound of frequency upto

25,000H2 20,000H2 30,000H2 20, H2

Question No. 15

Which wave property determines loudness?

All of these frequency pitch amplitude