Ray Optics And Optical Instruments Ques 22
22. Green light of wavelength $5460$ $ \AA$ is incident on an air-glass interface. If the refractive index of glass is $1.5$ , the wavelength of light in glass would be $(c=3 \times 10^{8}$ $ ms^{-1}.$ )
[1991]
(a) $3640 $ $\AA$
(b) $5460 $ $\AA$
(c) $4861 $ $\AA$
(d) none of the above
Show Answer
Answer:
Correct Answer: 22.(a)
Solution:
- (a) $\lambda_g=\frac{\lambda_a}{\mu}=\frac{5460}{1.5}=3640$ $ \AA$
BETA
