Every question from past board papers on Refraction through a prism, newest paper first. Open any question for its full worked answer.
A light ray enters through a right angled prism at point \(P\) with the angle of incidence \(30^\circ\) as shown in figure. It travels through the prism parallel to its base \(BC\) and emerges along the face \(AC\). The refractive index of the prism is:
Find the value of the angle of emergence from the prism. Refractive index of the glass is \(\sqrt{3}\).
A ray is incident at an angle of incidence \(i\) on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is \(\mu\), then the angle of incidence is nearly equal to :
The refractive index of the material of a prism is \(\sqrt2\) and the angle of the prism is \(30^\circ\). One of the two refracting surfaces of the prism is made a mirror inwards, by silver coating. A beam of monochromatic light entering the prism from the other face will retrace its path (after reflection from the silvered surface) if its angle of incidence on the prism is
A thin prism having refracting angle 10\(^\circ\) is made of glass of refractive index 1.42. This prism is combined with another thin prism of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be :
The angle of incidence for a ray of light at a refracting surface of a prism is \(45^\circ\). The angle of prism is \(60^\circ\). If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are :
