Question

1) Fill in the blank space and
The frequency of sound is measured in hertz
2) Complete the following table with observations of experiment of study of laws of
reflection
Sr. No. Angle of incidence (21) Angle of reflection (ZI)
1.
30°
45°
2.​

Answer 1

Explanation:

Laws of reflection.

(i)Angle of reflection.

(ii)Angle of incidence.

(iii)Angle of refraction.