Ray Optics And Optical Instruments Mock Tests

Light passes from a medium with refractive index 1.5 into a medium with refractive index 1.3. The critical angle for total internal reflection is:

A ray of light enters from glass (n = 1.5) into water (n = 1.33). The critical angle for total internal reflection at the glass-water interface is:

A glass prism of refractive index √2 has an angle of 60°. The angle of minimum deviation is:

A concave mirror of focal length 15 cm forms an image of the same size as the object. The distance of the object from the mirror is:

A concave mirror of focal length 20 cm forms an image of an object placed at 30 cm from the mirror. The image distance is:

A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length 30 cm. The combination acts as:

A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length 10 cm. The combination behaves as a:

A concave mirror of focal length f forms a real image that is n times the size of the object. The distance of the object from the mirror is: