Ray Optics

A ray of light passes through four transparent media with refractive indices $\mu_1$, $\mu_2$, $\mu_3$ and $\mu_4$ as shown in the figure. The surfaces of all media are parallel. If the emergent ray CD is parallel to…

A container is filled with water ($\mu = 4/3$) up to a height of 24 cm. A concave mirror is placed 10 cm above the water level, and the image (I) of an object placed at the bottom is formed 20 cm below the water level,…

A convex lens of refractive index $\mu$ has two surfaces of equal radius of curvature $R$. The focal length of convex lens is

Light enters from air into water of refractive index $\dfrac{4}{3}$. The percentage change in its wavelength is

The refracting angle of a prism is $'A'$ and its refractive index is $\cot\left(\dfrac{A}{2}\right)$. The minimum deviation produced by the prism is

The thin prism having refracting angle $10^\circ$ is made of glass of refractive index $1.42$. This prism is combined with another thin prism of glass of refractive index $1.7$. This combination produces dispersion…

A circular beam of light having diameter 'd' falls on a plane liquid surface from air. The angle of incidence is $45^\circ$ and refractive index of liquid is 'n'. The diameter of the refracted beam is $\left(\cos 45^0 =…

Three beams of blue, green and orange colour are made to pass separately through a prism . In the position of minimum deviation, the angle of refraction will be (the angle of prism is $60^\circ$)

What is the total optical path length of two media in contact with thicknesses of $d$ and $\dfrac{d}{4}$ and refractive indices of $n_1$ and $n_2$, respectively?

An object is placed 15 cm from a concave mirror of focal length 10 cm, then the nature of the image formed will be

The focal length of the objective of astronomical telescope is $2\ \text{m}$. Under normal adjustment, length of telescope is $2.10\ \text{m}$. The magnifying power of the telescope under normal adjustment is

In an experiment to measure the power of a convex lens, the least count of measuring scale for the position of object $u$ and the position of image $v$ are $\Delta u$ and $\Delta v$ respectively. The error $\Delta P$ in…