Ray Optics and Optical Instruments - Result Question 60
63. A thin prism of angle made of glass of refractive index is combined with another prism of glass of refractive index . The combination of the prism produces dispersion without deviation. The angle of the second prism should be
(a)
(b)
(c)
(d)
[2011M]
Show Answer
Answer:
Correct Answer: 63. (b)
Solution:
- (b) Deviation
zero
So,
or
Negative sign shows that the second prism is inverted with respect to the first.