diffraction occurs when light passes a) by a small particle b) through a small h
ID: 2294461 • Letter: D
Question
diffraction occurs when light passes
a) by a small particle
b) through a small hole
c) through a double slit
d) by a sharp edge
e) all the above
2) Green light of wavelength 500 nm is incident normally on a diffracting grating that has 5300 lines/ cm the second-order image is diffracted at an angle from the normal of
a) 10 degree
b)48 degree
c) 16 degree
d)57 degree
e) 32 degree
3) red light (wavelength=700 nm) is incident normally on a diffraction grating having 1000 lines/cm. a maximum is observed at a deflection angle of12 degrees. the order in which this occurs is
a) 1
b)2
c)3
d)4
e) 5
4) the pattern of light and dark fringes formed in young's double-slit experiment is due to
a)interference and dispersion
b) refraction and dispersion
c) interference and diffraction
d)diffraction and refraction
e) refraction and interference
Explanation / Answer
1 ) e)all the above
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2)e)32 degree
d sin theta = m lambda
sin theta = 5 * 10-7 / 1.9 * 10-6
theta = 32 degree
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3)c) 3
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d)c) interference and diffraction
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