Question # 1

If 'N' is number of lines rule don the grating having length 'L' then grating element 'd' is given by.

Choose an answer

N/L

2N/L

L/N

N/2L

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

Choose an answer

Dark

Blue

Bright

Red

Angle between ray of light and wave front is

Choose an answer

0 ^o

60 ^o

90 ^o

120 ^o

Standard metal according to Michelson's interferometer is equivalent to

Choose an answer

1553163.5 wave meter

3 x 108meter

15503000 meter

None of these

The blue colour of sky is due to

Choose an answer

diffraction

Reflection

Polarization

Scattering

The fringe spacing in a double slit experiment can be increased by decreasing.

Choose an answer

Wavelength of light

Width of slits

Slit separation

Distance between the slits and the screen

Hygen's principle is used for.

Choose an answer

Explain polarization

Locate the wave front

Find the speed of light

Find the index of refraction

According to Huygen's principle the points on primary wave front can be considered as

Choose an answer

Secondary wavelets

Ray of light

Source of light

None of these

Fringe spacing in Young's double slit experiment increases due to increase in.

Choose an answer

Slit separation

Wave length

Order of Fringe

Frequency of source

Fringe spacing is inversely proportional to.

Choose an answer

Wave length

Slit separation

Distance between the slit and screen

Frequency of light

Soap film is sunlight appears coloured due to.

Choose an answer

Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

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

Choose an answer

Plane

spherical

Circular

Eliptical

Michelson's interferometer can be used ot find the

Choose an answer

Velocity of light

Wavelength of light

Velocity of sound

Wavelength of sound

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

Choose an answer

Wave front

Diffraction

Interference

Polarization

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

Choose an answer

Refraction

Reflection

Diffraction

Polarization

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

Choose an answer

Maxwell

Young

Einsten

Hydrogen

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

Choose an answer

Secondary wavelet

New wave front

Sound

Primary wavelet

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

Choose an answer

Refraction

Polarization

Interference

Diffraction

Light entering rom air glass does not change in its.

Choose an answer

Frequency

Wavelength

Velocity

Direction

In red light is used as compare to blue light then fringe spacing.

Choose an answer

Decreases

Remain same

Increases

Becomes zero

Light waves emitted from a source spread in

Choose an answer

Specific direction

All direction

Upward direction

None of these

More Classes

Other Links

Physics Fsc Part 1 Chapter 9 Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer