Exam 9: Waves and Light

Out of the following, which frequency is not clearly audible to the human ear?

The mirror used in search lights is

Waves produced by supersonic jet planes are

The laws of reflection are true for

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

Which of the following is a non-luminous body?

The distance between two consecutive crests is L, then the wavelength is given by

The screen behind the eye lens is called the

A pulse is a wave

Echo is produced due to

During the 19th century, light was considered to be a stream of particles called

Sound waves cannot pass through

Sound waves in air are _____ waves.

The mirror used in automobiles to see the rear field of view is

Which of the following types of waves is different from others?

Shaving mirrors are

SONAR is based on the principle of

A body which allows most of the light to pass through it is called a

Who first proposed that light was wave-like in character?

Which of the following frequencies of sound cannot be heard by human beings?