Question # 1

Example of thin film is.

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Soap burble

convex lens

Concave lens

Glass plate

In young's double slit experiment for the interference the central region will be

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Dark

Bright

Coloured

None of these

Which one of the following can not be polarized.

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Ultra violet rays

Radio waves

T.V. Waves

Sound waves

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

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

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10^-8 m

10^-10m

10^-5m

10^-4m

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

The centre of Newton's fringe is dark due to.

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Destructive interference

Diffraction

Constructive interference

Polarization

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

Young in 1801 performed experiment for the first time about

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Interference

Diffraction

Polarization

Particle nature of light

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

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Hemoglobin

Stars

Galaxies

Stones

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

Huygen's proposed, light energy travels in space from source in

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1578

1678

1778

1868

Newton's rings are formed due to phenomenon of.

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Interference

Dispersion

Diffraction

Polarization

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

Which is nooptically active

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Sugar

Tartaric acid

Water

Sodium chloride

Sound waves can not be

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Reflected

Refracted

Polarized

Diffracted

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

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

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

Dark fringes are also called as

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Minima

Maxima

Wave front

Ray of light

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Physics Fsc Part 1 Chapter 9 Online Test MCQs With Answers

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