Sound Mock Tests

42 questions available

Sound Mock Test 1

Questions: 30

Sound Mock Test 2

Questions: 12

Sample Questions

Class 8 Science

In which of the following media does sound travel the fastest?

A Air

B Water

C Steel

D Vacuum

Class 8 Science

Sound waves cannot travel through:

A Air

B Water

C Steel

D Vacuum

Class 9 Science

Sound waves in air are:

A transverse waves

B longitudinal waves

C electromagnetic waves

D both transverse and longitudinal

Class 9 Science

An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. The image formed is:

A Virtual and erect

B Real and inverted

C Real and erect

D Virtual and inverted

Class 8 Science

In which of the following media does sound travel the fastest?

A Air at 0°C

B Water at 20°C

C Steel

D Vacuum

Class 9 Science

The echo of a sound is heard 3 seconds after it is produced. If the speed of sound in air is 342 m/s, the distance of the reflecting surface from the source is:

A 513 m

B 1026 m

C 342 m

D 684 m

Class 8 Science

The loudness of sound is measured in which unit?

A Hertz

B Desibel

C Decibel

D Newton

Class 8 Science

Which of the following is a source of noise pollution?

A Planting trees

B Airplanes and loudspeakers

C Solar panels

D Electric trains in tunnels

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