11th Class Physics MCQS Chapter 9

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11th Class Physics MCQS
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Standard metal according to Michelson’s interferometer is equivalent to
3 x 108meter
1553163.5 wave meter
None of these
15503000 meter

In young’s double slit experiment for the interference the central region will be
Dark
None of these
Coloured
Bright

In case of point source the shape of wave front is
Elliptical
Square
Spherical
Circular

Oil film floating on water exhibits colours due to
All of these
Diffraction
Polarization
Interference

Huygen’s proposed, light energy travels in space from source in
1778
1578
1868
1678

Which of the following is evidence of wave nature of light
All of these
Polarization
Interference
Diffraction

A ray of light is a line
Parallel to wave front
Any one of these
Anti-parallel to wave
Normal to wave front

The distance between two consecutive wave front is equal to
Three wave length
One wave length
Two wave length
Half wave length

The centre of Newton’s rings will be
Coloured
Bright
Not visible
Dark

According to Huygen’s principle the points on primary wave front can be considered as
None of these
Source of light
Ray of light
Secondary wavelets

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