Ray Optics and Optical Instruments

Related Questions

• Deviation of 5° is observed from a prism whose angle is small and whose refractive index is 1.5. The angle of prism is

  ---

• If an observer is walking away from the plane mirror with $6$ m/sec Then the velocity of the image with respect to observer will be

  ---

• The fine powder of a coloured glass is seen as

  ---

• The length of an astronomical telescope for normal vision (relaxed eye) ($f_o$ = focal length of objective lens and $f_e$ = focal length of eye lens) is

  ---

• A plano convex lens is made of glass of refractive index $1.5$. The radius of curvature of its convex surface is $R$. Its focal length is

  ---