Chapter 26 – Geometrical Optics

What is the angle of incidence for an equilateral prism of refractive index root 3 ​so that the ray is parallel to the base inside the prism? What is the angle of incidence for an equilateral prism of refractive index root 3 so that the ray is parallel to the base inside the prism? November [...]

Consider an equiconvex lens of radius of curvature R and focal length f. If f>R, the refractive index μ of the material of the lens. Consider an equiconvex lens of radius of curvature R and focal length f. If f>R the refractive index μ of the material of the lens. November 13, 2020 Category: Cengage [...]

A ray of light passes from glass, having a refractive index of 1.6 to air. The angle of incidence for which the angle of refraction is twice the angle of incidence is A ray of light passes from glass having a refractive index of 1.6 to air. The angle of incidence for which the angle [...]

What should be the value of distance d so that final image is formed on the object itself. (Focal lengths of the lenses are written on the lenses.) What should be the value of distance d so that final image is formed on the object itself. (Focal lengths of the lenses are written on the [...]

Behind a thin converging lens having both the surfaces of the same radius 10 cm, a plane mirror has been placed. The image of an object at a distance of 40 cm from the lens is formed at the same position. What is the refractive index of the lens? a plane mirror has been placed. [...]

A beam of light propagates through a medium 1 and falls onto another medium 2, at an angle α 1 as shown in Fig. After that, it propagates in medium 2 at an angle α2 as shown. The light’s wavelength in medium 1 is λ1. What is the wavelength of light in medium 2? A [...]

A thin equiconvex lens (μ=3/2) of focal length 10 cm is cut and separated and a material of refractive index 3 is filled between them. What is the focal length of the combination? A thin equiconvex lens (μ=3/2) of focal length 10 cm is cut and separated and a material of refractive index 3 is [...]

Light is incident on a glass block as shown in Fig. If θ1 is increased slightly, what happens to θ 2 ? Light is incident on a glass block as shown in Fig. If θ1 is increased slightly what happens to θ 2 ? November 13, 2020 Category: Cengage JEE Mains Physics by B.M Sharma [...]

You are given two identical plano-convex lenses. When you place an object 20cm to the left of a single plano-convex lens, the image appears 40cm to the right of the lens. You then arrange the two plano-convex lenses back to back to form a double convex lens. If the object is 20cm to the left [...]