Physics MCQs

852 MCQs  (Page 63 of 86)

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In monochromatic red light a blue book will probably appear to be_________________?
A. Black
B. Purple
C. Green
D. No scientific reasoning available
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In double slit experiment if one of the two slit is covered then________________?
A. No interference fringes are observed
B. No diffraction fringes are observed
C. No fringes observed
D. Interference pattern not disturbed
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In the shadow of a ball the central portion appears bright that happens due to_________________?
A. Interference
B. Diffraction
C. Polarization
D. Refraction
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Crystals of a material can behave as_________________?
A. Convex lens
B. Interferometer
C. Diffraction grating
D. Concave
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Which is not optically active ?
A. Sugar
B. Tartaric acid
C. Water
D. Sodium chlorate
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A point source of light placed in a homogeneous medium gives rise to ___________________?
A. A cylindrical wave front
B. An elliptical wave front
C. A spherical wave front
D. A plane wave front
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Which one of the following is nearly monochromatic light ?
A. Light form fluorescent tube
B. Light form neon lamp
C. Light form sodium lamp
D. Light form simple lamp
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When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?
A. Polarization
B. Constructive interference
C. Destructive interference
D. Diffraction
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In Young double slit experiment, if white light is used____________________?
A. Alternate dark and bright fringes will be seen
B. Coloured fringes will be seen
C. No interference fringes will be seen
D. Impossible to predict
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In an interference pattern______________________?
A. Bright fringes are wider than dark fringes
B. Dark fringes are wider than bright fringe
C. Both dark and bright fringes are of equal width
D. Central fringes are brighter than the outer fringes
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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