List of top Physics Questions on Ray optics and optical instruments asked in JEE Advanced

A double convex lens made of glass of refractive index \(1.5\) and radii of curvature \(20\,\text{cm}\) each is immersed in a liquid of refractive index \(n_L\). The correct plot showing the variation of the power, in the units of diopter \((D)\), as a function of \(n_L\), is:
A beam of polychromatic light passes through a thin prism of prism angle \(6^\circ\). The refractive index of the material of the prism varies with wavelength \((\lambda)\) as \(n(\lambda) = a\lambda + \frac{b}{\lambda^2}\), where \(a = 3\,\mu\text{m}^{-1}\) and \(b = 0.096\,\mu\text{m}^2\). If \(\lambda_{\min}\) is the wavelength at which the angle of minimum deviation \(D_m\) is smallest, then the correct value of \(D_m\) at \(\lambda_{\min}\) is:
Consider two isosceles prisms 1 and 2 with prism angles $A_1$ and $A_2$ and refractive indices $n_1$ and $n_2$, respectively, as shown in the figure. The faces $a_1b_1$ and $a_2b_2$ are parallel to each other and perpendicular to the mirror $M$. If a ray of light is incident on the face $a_1c_1$ and emerges from the face $a_2c_2$, then the correct statement(s) is/are:


In the List-I, four optical effects are mentioned. The physical phenomena of light which are essential to describe these optical effects are given in List-II. Choose the option which describes the correct match between the entries in List-I to those in List-II. {p{7cm} p{6cm}} List-I & List-II
(P) Colorful sky in north polar region (Aurora Borealis) & (1) Dispersion and reflection
(Q) Partially polarized sunlight & (2) Total internal reflection
(R) Rainbow & (3) Diffraction
(S) Dark and bright fringes & (4) Scattering of light by molecules in the atmosphere
& (5) Emission of radiation from oxygen and nitrogen atoms excited by charged particles