List of top Physics Questions on Ray optics and optical instruments asked in KEAM

The optical elements are matched with their optical phenomenon. The FALSE match is

5 thin lenses each of 20 cm focal length are placed in contact with each other. The net power of this lens combination is

A light ray enters from medium 1 to medium 2. Its velocity in medium 1 is \( 2 \times 10^{8} \) m/s and in medium 2 is \( 1.5 \times 10^{8} \) m/s. The critical angle for the pair of media is:

At the lowest point of the plot of angle of deviation versus the angle of incidence of a triangular prism, the angle of incidence is equal to

Chromatic aberration arises in thick lenses due to:

When a ray of light moves from one medium to another medium,

Monochromatic ray of light incident on a glass prism does not produce the phenomenon of

The ratio of the speed of light in vacuum to that in a medium is called

A convex lens having power \(P\) is cut into two halves perpendicular to the principal axis. Then the power of each piece is

A certain prism produces a minimum deviation of \(42^\circ\). It produces a deviation of \(45^\circ\) when the angle of incidence is either \(43^\circ\) or \(62^\circ\). The angle of incidence when the prism undergoes minimum deviation is

Secondary rainbow in the atmosphere is

Identify the wrong sign convention

A ray of light is incident normally on one refracting surface of an equilateral prism. If the refractive index of the material of the prism is 1.5, then

Identify the mismatched pair

The apparent flattening of the sun at sunset and sunrise is due to

The apparent flattening of the sun at sunset and sunrise is due to

The apparent flattening of the sun at sunset and sunrise is due to