Ray Optics and Optical Instruments

Related Questions

• For observing a cricket match, a binocular is preferred to a terrestrial telescope because

  ---

• If the refractive index of a material of equilateral prism is $\sqrt{3}$, then angle of minimum deviation of the prism is

  ---

• If in a plano-convex lens, the radius of curvature of the convex surface is 10 cm and the focal length of the lens is 30 cm, then the refractive index of the material of lens will be

  ---

• A prism of refractive index $\sqrt{2}$ has a refracting angle of $60^o$. At what angle a ray must be incident on it so that it suffers a minimum deviation

  ---

• A person wears glasses of power – 2.5 D. The defect of the eye and the far point of the person without the glasses are respectively

  ---