Physics MCQs

Page No. 61

The locus of all points in a medium having the same phase of vibration is called____________________?


a crest

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btrough

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cwavelength

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dwave front

✓


View Answer wave front

Central spot of Newtons rings __________________?


abright

✓


bdark for large wavelength

✖


c dark

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d bright for large wavelength

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View Answer bright

According to Einstein light travels form one place to another in the form of ________________?


awaves

✖


b particles

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cphotons

✓


dit was not his discovery

✖


View Answer photons

Light reaches the earth form sun in nearly____________________?


a15 minutes

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b10 minutes

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c8 minutes

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d 8 minutes 30 seconds

✓



When light incident normally on thin film the path difference depends upon ________________?


athickness of the film only

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bnature of the film only

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cangle of indidence only

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dall thickness nature and angle of incidence

✓



Which is not optically active ?


asugar

✖


b. tartaric acid

✖


cwater

✓


d sodium chlorate

✖


View Answer water

Crystals of a material can behave as_________________?


aConvex lens

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bInterferometer

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c Diffraction grating

✓


dConcave

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In the shadow of a ball the central portion appears bright that happens due to_________________?


aInterference

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bDiffraction

✓


cPolarization

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d Refraction

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View Answer Diffraction

In double slit experiment if one of the two slit is covered then________________?


ano interference fringes are observed

✓


bno diffraction fringes are observed

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cno fringes observed

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d interference pattern not disturbed

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In monochromatic red light a blue book will probably appear to be_________________?


ablack

✓


b purple

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cgreen

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dno scientific reasoning available

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View Answer black

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