Q: Phenomenon of interference and diffraction support the :

(a) :  Quantum nature of light
(b) :  Transverse nature of light
(c) :  Wave nature of light
(d) :  Complex nature of light
(e) :  None of the Above
Answer:  Wave nature of light

Q: In Bragg's equation, d represents:

(a) :  Grating element
(b) :  Slit separation
(c) :  Interplaner spacing
(d) :  None of thse
(e) :  None of the Above
Answer:  Interplaner spacing

Q: Wavelenght of light can be found by means of Michelson Interferometer using the formula:

(a) :  λ=2m/L
(b) :  λ=L/2m
(c) :  λ=m/2L
(d) :  λ=2L/m
(e) :  None of the Above
Answer:  λ=2L/m

Q: A grating has 5000 lines per centimeter.Then grating element will be given as:

(a) :  2 x 10-6 m
(b) :  2 x 10-8 m
(c) :  2 x 10-10 m
(d) :  2 x 10-4m
(e) :  None of the Above
Answer:  2 x 10-6 m

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