PHYSICS [ SOUND]

Question 1

When sound propagates in air, it does not carry energy with it

Answer 1

FALSE

Question 2

In a longitudinal wave, compression and rarefaction are formed

Answer 2

TRUE

Question 3

The distance from one compression to nearest rarefaction is called a wavelength

Answer 3

FALSE

Question 4

The frequency is mesasured in seconds

Answer 4

FALSE

Question 5

The quality of a sound depends on the ampliture of the wave

Answer 5

FALSE

Question 6

The pitch of sound depends on frequency

Answer 6

TRUE

Question 7

Decibel is the unit of pitch of sound

Answer 7

FALSE

Question 8

The time period of a wave is 2s. its frqeuency is ____

Answer 8

0.5

Question 9

The pitch of a stringed instrument is increased by ____ in the tension of the strings

Answer 9

INCREASE

Question 10

The pitch of a flute is decreased by ___ in the length of the air column

Answer 10

INCREASE

Question 11

Smaller the membrane, ______ is the pitch

Answer 11

MORE

Question 12

If a drum is beaten hard, its loudness ___

Answer 12

INCREASES

Question 13

A tuning fork produces sound of _____ frequency

Answer 13

SINGLE

Question 14

Sound cannot travel in?

Answer 14

VACCUM

Question 15

When sound travels in form of a wave, __________

Answer 15

THE PARTICLES OF THE MEDIUM TRANSFER ENERGY WITHOUT CHANGING THEIR MEAN POSITIONS

Question 16

The safe limit of loudness of audible sound is?

Answer 16

0-80 dB

Question 17

The unit of loudness is

Answer 17

DECIBEL

Question 18

In a piano, pitch is decreased by?

Answer 18

Striking it hard