Question

The critical angle of perspex was found to be
45°.the refractive index of perspex.the refractive index of air is1.0.use
smells law of refraction.

Answer 1

Answer:

According to Snell's Law: sinrsinic=n1n2 and for critical angle of incidence r=90o and n2=1

Blue light has higher refractive index than yellow light hence it's critical angle will be lower than yellow light.

Answer 2

Answer:

ANSWER IS IN THE PHOTO...