15) Light of wavelength 500 nm in air enters a glass block with n = 1.5. When th

Question

15)  Light of wavelength 500 nm in air enters a glass block with n = 1.5.  When the light enters

       the block what properties of the light do not change?

   a) the speed of light b) the frequency of light  c) the wavelength of light  d) the polarization

16) A ray of light strikes a mirror at an angle x as shown.  Two other mirrors are arranged as

      shown.  The mirrors make angles of 90

Light of wavelength 500 nm in air enters a glass block with n = 1.5. When the light enters the block what properties of the light do not change? the speed of light b) the frequency of light c) the wavelength of light d) the polarization A ray of light strikes a mirror at an angle x as shown. Two other mirrors are arranged as shown. The mirrors make angles of 90 degree to each other. What is the angle of the emerging ray with respect to the normal?

Explanation / Answer

15) b) frequency doesnt change

d) polarization doesnt change

16) will make an angle with vertical mirror

than will make 90-x with horizontal

and then make x with right vertical

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