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.Management Sciences
Category: Physical Optics
When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?
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A. polarization
B. constructive interference
C. destructive interference
D. diffraction
In the shadow of a ball the central portion appears bright that happens due to_________________?
A. Interference
B. Diffraction
C. Polarization
D. Refraction
Which one of the following cannot be polarized ?
A. radio waves
B. ultraviolot rays
C. X-rays
D. sound waves
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
In monochromatic red light a blue book will probably appear to be_________________?
A. black
B. purple
C. green
D. no scientific reasoning available
A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?
A. 500 mm
B. 5 x 10-3 mm
C. 2 x 10-5 mm
D. 2 x 10-3 mm
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