Ray Optics and Optical Instruments

Related Questions

• In the formation of primary rainbow, the sunlight rays emerge at minimum deviation from rain-drop after

  ---

• The maximum magnification that can be obtained with a convex lens of focal length 2.5 cm is (the least distance of distinct vision is 25 cm)

  ---

• On a glass plate a light wave is incident at an angle of 60°. If the reflected and the refracted waves are mutually perpendicular, the refractive index of material is

  ---

• If convex lens of focal length $80cm$ and a concave lens of focal length $50 cm$ are combined together, what will be their resulting power

  ---

• Which of the following is not correct regarding the radio telescope

  ---