Chapter 9 – Ray Optics

If the velocity of light in vacuum is 3×10^8 ms^−1 , the time taken (in nanosecond) to travel through a glass plate of thickness 10 cm and refractive index 1.5 is : If the velocity of light in vacuum is 3×10^8 ms^−1 the time taken (in nanosecond) to travel through a glass plate of thickness [...]

Critical angle for light going from medium (i) to (ii) is θ. The speed of light in medium (i) is v, then the speed of light in medium (ii) is Critical angle for light going from medium (i) to (ii) is θ. The speed of light in medium (i) is v then the speed of [...]

If the speed of light in material A is 1.25 times its speed in material B, then the ratio of the refractive indices of these materials is If the speed of light in material A is 1.25 times its speed in material B then the ratio of the refractive indices of these materials is November [...]

A point source of light is kept at a depth of h in water of refractive index 4/3. The radius of the circle at the surface of water through which light emits is A point source of light is kept at a depth of h in water of refractive index 4/3. The radius of the [...]

A ray of light enters from a rarer to a denser medium. The angle of incidence is i. Then the reflected and refracted rays are mutually perpendicular to each other. The critical angle for the pair of media is Light travels through a glass plate of thickness t and refractive index μ. If c is [...]

Three immiscible liquids of densities d1 >d2 >d3 ​and refractive indices μ1 > μ2 > μ3 are put in a beaker. The height of each liquid column is h/3. A dot is made at the bottom of the beaker. For near normal vision, find the apparent depth of the dot. Light travels through a glass [...]

Light travels through a glass plate of thickness t and refractive index μ. If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass is Light travels through a glass plate of thickness t and refractive index μ. If c is the speed of light in [...]

For light incident from air onto a slab of refractive index 2, maximum possible angle of refraction is For light incident from air onto a slab of refractive index 2 maximum possible angle of refraction is November 8, 2020 Category: Chapter 9 - Ray Optics , MTG NEET Physics , Part 1 ,

A ray of light passes through four transparent media with refractive index n1, n2 , n3 ​and n4 ​ as shown. The surfaces of all media are parallel. If the emergent ray DE is parallel to incident ray AB, then A ray of light passes through four transparent media with refractive index n1 n2 n3 [...]

A ray of light strikes a glass plate at an angle of 60° with the glass surface. If the reflected and refracted rays are at right angles to each other, find the refractive index of the glass is A ray of light strikes a glass plate at an angle of 60° with the glass surface. [...]