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A prism having a refracting angle 4^(@) ...

A prism having a refracting angle `4^(@)` and refractive index 1.5 is located in front of a vertical plane mirror as shown. A horizontal ray of light is incident on the prism. What is the angle of incidence at the mirror ?

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The deviation suffered by refraction through the small angled prism is given by
`delta =(mu -1)A=(1.5 -1) xx4^(@)=2^(@)`
This gives the angle of incidence `2^(@)` at the mirror.
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MOTION-GEOMETRICAL OPTICS-Exercise - 4 | Level-II
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  17. A student performed the experiment of determination of focal length of...

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  18. A ray OP of monochromatic light is incident on the face AB of prism AB...

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