Ray Optics and Optical Instruments

Related Questions

• The aperture of a telescope is made large, because

  ---

• If critical angle for a material to air is $30^o$, the refractive index of the material will be

  ---

• A prism $(\mu =1.5)$ has the refracting angle of 30°. The deviation of a monochromatic ray incident normally on its one surface will be (sin 48° 36’ = 0.75)

  ---

• To remove myopia (short sightedness) a lens of power 0.66 D is required. The distant point of the eye is approximately

  ---

• If the red light is replaced by blue light illuminating the object in a microscope the resolving power of the microscope

  ---