Day 6

1.A parallel beam of light is incident on a glass slab of thickness t and refractive index n.What is the lateral displacement of the emergent ray with respect to the incident ray?

2.A thin lens of focal length f is placed in contact with a glass plate of refractive index n.A parallel beam of light is incident on the lens and the emergent beam is parallel to the incident beam.calculate the thickness of the glass plate?

3.A light ray is incident on a glass prism of refractive index 1.5 and apex angle 60 degrees.The angle of incidence is such that that the ray just grazes the surface of the prism.Find the angle of deviation of the ray as it emerges from the prism?

4.A point source of light is placed 10cm below the surface of a swimming pool.the refractive index of the water is 1.33.Find the depth of the pool at which the image of source is formed?

5.A thin lens of focal length 10cm is placed infront of the lens.A point source of light is placed 30cm infront of the lens.A second screen is placed 20cm behind the lens.find the distance of the image from the second screen?