Refraction Of L...

A thin prism of angle A = 6° produces a deviation d = 3°. Find the refractive index of the material of prism

A ray of light is incident at an angle of 60° on one face of a prism which has an angle of 30°. The ray emerging out of the prism makes an angle of 30° with the incident ray. Calculate the refractive index of the material of the prism

Light of wavelength 6000Å enters from air into water (a medium of refractive index 4/3). Find the speed and wavelength [c = 3 × 10⁸ m/s]

A ray of light is incident on a transparent glass-slab of refractive index 1.5. If the reflected and refracted rays are mutually perpendicular, what is the angle of incidence ?

An optical fibre consists of core of m1 surrounded by a cladding of m₂ < m₁ . A beam of light enters from air at an angle a with axis of fibre. The highest a for which ray can be travelled through fibre is

A glass plate 4 mm thick is viewed from the above through a microscope. The microscope must be lowered 2.58 mm as the operator shifts from viewing the top surface to viewing the bottom surface through the glass. What is the index of refraction of the glass ?

A vertical microscope is focussed on a point at the bottom of an empty tank. Water (m = 4/3) is then poured into the tank. The height of the water column is 4cm. Another lighter liquid, which does not mix with water and which has refractive index 3/2 is then poured over the water.The height of liquid column is 2cm. What is the vertical distance through which the microscope must be moved to bring the object in focus again ?

Light from a sodium lamp (λ₀ = 589 nm) passes through a tank of glycerin (refractive index 1.47) 20m long in a time t₁ . If it takes a time t₂ to traverse the same tank when filled with carbon disulphide (index 1.63), then the difference t₂–t₁ is

A light beam is travelling from Region I to IV (Refer Figure). The refractive index in 4 Regions I, II, III and IV are ​, respectively. The angle of incidence θ for which the beam just misses entering Region IV is

The refractive index of the material of a prism is √2 and its prism angle is 30º. One of its refracting faces is polished. The incident beam of light will return back for the angle of incidence