Question Answers

Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > The diameter of the moon is 3.5 × 10^3 km and its distance from the earth is 3.8 × 10^5 km. It is seen by a telescope having the focal length of the objective and the eye-piece as 4 m and 10 cm respectively. The diameter of the image of the moon will be approximately

The diameter of the moon is 3.5 × 10^3 km and its distance from the earth is 3.8 × 10^5 km. It is seen by a telescope having the focal length of the objective and the eye-piece as 4 m and 10 cm respectively. The diameter of the image of the moon will be approximately

A simple telescope The light ray is incidence at angle of 60∘ on a prism of angle 45∘ . When the light ray falls on the other surface at 90∘ the refractive index of the material of prismμ and the angle of devaition δ are given by