Question # 1

Newton's rings are formed due to phenomenon of.

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Interference

Dispersion

Diffraction

Polarization

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

the locus of all pint in the same wave of vibration is called.

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Wave front

Diffraction

Interference

Polarization

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is.

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5000 m

50000 A^o

500 cm

2000 A^o

The property of bending of light around obstacles is

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Interference

Diffraction

Polarization

Superposition

Young in 1801 performed experiment for the first time about

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Interference

Diffraction

Polarization

Particle nature of light

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

X-ray diffraction has been very useful in determining the structure of

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Hemoglobin

Stars

Galaxies

Stones

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

Which phenomenon of light proves that light waves are transverse in nature.

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Refraction

Reflection

Diffraction

Polarization

The wavelength of X-rays is of the order of.

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10^-8 m

10^-10m

10^-5m

10^-4m

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

The distance between two consecutive wave front is equal to

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One wave length

Two wave length

Half wave length

Three wave length

When newton ring are seen through the transmitted light, then central spot is.

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Dark

Blue

Bright

Red

Bending of light around the edges of an obstacle is called.

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Refraction

Polarization

Interference

Diffraction

In case of point source the shape of wave front is.

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Plane

spherical

Circular

Eliptical

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Physics Fsc Part 1 Chapter 9 Online Test MCQs With Answers

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