Refraction through Multiple Spherical Surfaces
Trending Questions
Q.
A parallel beam of light travelling in water (refrative index = 43) is refracted by a spherical air bubble of radius 2 mm situated in water. Assuming the light rays to be paraxial, locate the position of the final image.
-5 mm
-6 mm
5 mm
6 mm
Q. A crystal ball is 20 cm in diameter with R. I.=1.5. If a gypsy lady is 1.2 m from the ball, where is the image of the gypsy as seen from the other side?
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/793116/original_10.PNG)
- 6.9 cm from the crystal ball
- 7.9 cm from the crystal ball
- 8.9 cm from the crystal ball
- None of these
Q. The diameter of aperature of a plano convex lens is 6 cm and its maximum thickenss is 3 mm. If the velocity of light in the material of lens is 2×108ms−1, calculate the focal length of the lens
- 10 cm
- 15 cm
- 20 cm
- 30 cm
Q. A ray of light falls on the surface of a spherical glass paper weight making an angle α with the normal and is refracted in the medium at an angle β. The angle of deviation of the emergent ray from the direction of the incident ray is
- (α−β)
- 2(α−β)
- (α−β)2
- (α+β)