Question # 1

The appearance of colours in the soap (or oil) film results from

Choose an answer

Dispersion

Interference

Reflection

Refraction

To observe interference of light, the condition, which must be met with is that the sources must be

Choose an answer

Monochromatic

Phase coherent

Both of above

None of above

In an interference pattern of Young's Double Slit (YDS) experiment

Choose an answer

Bright fringes are wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

Huygen principle is used to determine

Choose an answer

Speed of light

Location of wavefront

About polarized and unpolarized light

None of them

Monochromatic light means wave of

Choose an answer

Same frequency

Same colour

Same Wavelength

All of them

Light waves are

Choose an answer

Transverse waves

Longitudinal waves

Compressional

None of them wave

Two sources are said to be coherent if they have

Choose an answer

Same amplitude

Same wavelength

Definite phase relation with each other

None of them

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

Choose an answer

Equal to

Greater than

Smaller than

None of these

Laws of reflection and refraction can also be explained by

Choose an answer

Particle nature of light

Quantum nature of light

Wave nature of light

Complex nature of light

Electromagnetic waves transport

Choose an answer

Energy only

Momentum only

Both A and B

None is correct

Light waves are

Choose an answer

Mechanical waves

Electromagnetic waves

Any of above

None of above

The locus of all the points in the same phase of vibration is called

Choose an answer

Wave pocket

Wavefront

Wave number

None of these

Speed of light in vacuum depends upon

Choose an answer

Frequency

Wavelength

Amplitude

None of these

Wavelength of light, on the average, is given by

Choose an answer

10^-14m

10^-10m

10^-6m

10^-4m

Wavelength of red colour as compared to that of violet colour is

Choose an answer

Smaller

Longer

Equal

None of these

More Classes

Other Links

ECAT Physics Chapter 10 Optical Instruments 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