Question

cinema hall has a valuene
of

120000 m3 It has

reutzbration
time of 0.8 second what is the
awrage obrushing power of the surface if the total sound observing surface is 25000 m2
​

Answer 1

Answer:

A ray of light bends while going from one medium to another because of the phenomena of refraction. When the ray of light travels from one medium to another as the velocity of the light ray will either increase or decrease depending on the optical density of the material.