Q: Maximum number of order available with a grating is_______grating element:

(a) :  Independent of
(b) :  Directly proportional to
(c) :  Inversely proportional to
(d) :  None of these
(e) :  None of the Above
Answer:  Directly proportional to

Q: In YDS experiment, data given is ʎ=500nm,, d=1mm, L=100 cm, Δy comes out to be :

(a) :   0.5 cm
(b) :   0.5 mm
(c) :   0.5nm
(d) :   0.5mm
(e) :  None of the Above
Answer:   0.5 mm

Q: Sin ɵ=0.5 for first order maximum in a diffraction grating. The value of angle ɵ is equal to:

(a) :  (3)0
(b) :  (15)0
(c) :  (30)0
(d) :  (60)0
(e) :  None of the Above
Answer:  (30)0

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

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