Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Olympiad workbookNSEPRay Optics

A parallel beam of light is made incident (as shown) on the flat diametric plane of a transparent semi-circular thin sheet of thickness t(t R) of refractive index = 2 at an angle of 45^ . As a result of refraction, the light enters the semi-circular sheet and comes out at its curved surface.

Options

  1. ALight rays come out at the curved surface for values of in the range 75^ 165^ .
  2. BThe range of angle is independent of the angle of incidence.
  3. CThe range of angle depends on the refractive index of the material
  4. DAll the emergent rays of light shall cross the line OP which is a refracted ray at =120^ Here is the angle bet

Correct answer

D. All the emergent rays of light shall cross the line OP which is a refracted ray at =120^ Here is the angle bet

Step-by-step solution

No Solution

Practice Ray Optics on Quantrex Academy →

More from Ray Optics

Consider a manual camera with a lens having a focal length of 5 cm . It is focused at infinity. For catching the picture of an object at a distance of 30 cm , one wouldA point source of light is viewed through a plate of glass of thickness t and of refractive index 1.5. The source appearsA small fish, 4 cm below the surface of a lake, is viewed through a thin converging lens of focal length 30 cm held 2 cm above the water surface. Refractive index of water is 1.33 Two identical lenses made of the same material of refractive index 1.5 have the focal length 12 cm . These lenses are kept in contact and immersed in a liquid of refractive index 1In case of real images formed by a thin convex lens, the linear magnification is (I) directly proportional to the image distance, (II) inversely proportional to the object distanceA horizontal ray of light passes through a prism of refractive index 1.5 and apex angle 4^ and then strikes a vertical plane mirror placed to the right of the prism. If after refleWhen observed from the earth the angular diameter of the sun is 0.5 degree. The diameter of the image of the sun when formed in a concave mirror of focal length 0.5 m will be aboutAn object 1 cm long lies along the principal axis of a convex lens of focal length 15 cm , the centre of the object being at a distance of 20 cm from the lens. Therefore, the size Full Ray Optics list All Olympiad workbook PYQs