Test on Ray Optics and optical Instruments-2

Let the x – z plane be the boundary between two transparent media. Medium 1 in z ≥ 0 has a refractive index of and medium 2 with z < 0 has a refractive index of . A ray of light in medium 1 given by the vector is incident on the plane of separation. The angle of refraction in medium 2 is

A car is fitted with a convex side–view mirror of focal length 20 cm. A second car 2.8 m behind the first car is overtaking the first car at a relative speed of 15 m/s. The speed of the image of the second car as seen in the mirror of the first one is

A green light is incident from the water to the air - water interface at the critical angle (θ). Select the correct statement

A transparent solid cylindrical rod has a refractive index of . It is surrounded by air. A light ray is incident at the mid–point of one end of the rod as shown in the figure.

The incident angle θ for which the light ray grazes along the wall of the rod is:

When an unpolarized light of intensity l_o is incident on a polarizing sheet, the intensity of the light which does not get transmitted is