Ray Optics and ...

Just before setting, the sun may appear to be elliptical. This happens due to:

Bending effect of light as it passes from one transparent material into other is known as

An air bubble in glass slab (μ=1.5) from one side is 6 cm and from other side is 4 cm. The thickness of glass slab is :

What is the Principle of Reversibility?

A microscope is focused on an ink mark on the top of a table. If we place a glass slab 3cm thick on it, how should the microscope be moved to focus the ink spot again? The refractive index of glass slab is 1.5 cm.​

Can absolute value of refractive index be less than unity?

When light undergoes refraction, its frequency

A ray of light passes through a plane glass slab of thickness t and refractive index μ = 1.5. The angle between the incident ray and emergent ray will be:​

When light undergoes refraction, the wavelength

Due to _______ the depth of an optically denser medium appears to be _______ than its real depth.