Reflection — Set 4

Diffuse reflection is most likely from a surface that is?

If speed of sound is 330 m/s, the minimum distance of a wall from a person for a distinct echo (minimum delay 0.1 s) is about?

The normal to a plane mirror at a point is a line that is?

A ray of light incident along the normal to a plane mirror is reflected?

Which statement about diffuse reflection is correct?

SONAR works mainly on the principle of?

An object is 15 cm in front of a concave mirror of focal length 10 cm. The magnification of the image is?

Compared to a soft curtain, a hard wall generally reflects sound with?

A plane mirror is moved 2 cm toward a fixed object. The image shifts by?

The angle between incident and reflected rays is 120°. The angle of incidence is?