Tube lessons

1)

Second law of refraction is :

2)

If a ray of light travels from air to water , if the angle of incidence be \(40^{0}\), the angle of refraction will be :

3)

Snell's Law is :

4)

If a ray of light travelling through air be incident on the surface of water perpendicularly, the angle of refraction will be :

5)

If the angle of incidence and angle of refraction be \(45^{0}\) and \(60^{0}\) respectively , then angle of deviation is :

Physics