What is angle of deviation due to refraction?

What is principle of reversibility?

What is relative refractive index?

Why do stars twinkle?

Explain the reason for the glittering of diamond.

What are mirage and looming?

Write a short note on the prisms making use of total internal reflections.

What is Snell’s window?

Write a note on optical fibre.

What are the Cartesian sign conventions for spherical mirrors?

How does an endoscope work?

What are primary focus and secondary focus of a lens?

What are the sign conventions followed for lenses?

What is power of a lens?

What is angle of minimum deviation?

What is dispersion?

How are rainbows formed?

Why does sky appear blue?

What is the reason for reddish appearance of sky during sunset and sunrise?

Why do clouds appear white?

What is Rayleigh’s scattering?

Discuss about simple microscope and obtain the equations for magnification for near point focusing and normal focusing.

An object is placed at a certain distance from a convex lens of focal length 20 cm. Find the object distance if the image obtained is magnified 4 times.

An object is placed in front of a concave mirror of focal length 20 cm. The image formed is three times the size of the object. Calculate two possible distances of the object from the mirror.

Prove that for the same incident light when a reflecting surface is tilted by an angle θ, the reflected light will be tilted by an angle 2θ.

What is the height of the mirror needed for a person to see his/her image fully on the mirror?

Pure water has refractive index 1.33. What is the speed of light through it?

Light travelling through transparent oil enters in to glass of refractive index 1.5. If the refractive index of glass with respect to the oil is 1.25, what is the refractive index of the oil?

A coin is at the bottom of a trough containing three immiscible liquids of refractive indices 1.3, 1.4 and 1.5 poured one above the other of heights 30 cm, 16 cm, and 20 cm respectively. What is the apparent depth at which the coin appears to be when seen from air medium outside? In which medium the coin will appear?

A optical fibre is made up of a core material with refractive index 1.68 and a cladding material of refractive index 1.44. What is the acceptance angle of the fibre if it is kept in air medium without any cladding?

If the focal length is 150 cm for a lens, what is the power of the lens?

A monochromatic light is incident on an equilateral prism at an angle 30^o and is emergent at an angle of 75^o . What is the angle of deviation produced by the prism?

The angle of minimum deviation for an equilateral prism is 37^o . Find the refractive index of the material of the prism.

Find the dispersive power of a prism if the refractive indices of flint glass for red, green and violet colours are 1.613, 1.620 and 1.632 respectively.

Why are dish antennas curved?

What type of lens is formed by a bubble inside water?

Why does sky look blue and clouds look white?

Two independent monochromatic sources cannot act as coherent sources, why?

Does diffraction take place at the Young's double slit?

Is there any difference between coloured light obtained from prism and colours of soap bubble?

A small disc is placed in the path-of the light from distance source. Will the center of the shadow be bright or dark?

When a wave undergoes reflection at a denser medium, what happens to its phase?

State Snell’s law/law of refraction.