Wave Optics MCQ Questions Class 12 Physics Chapter 10
NCERT MCQ Questions for Class 12 Physics Chapter 10 Wave Optics. Wave Optics MCQ Questions with Answers from Class 12 Physics.
Wave Optics MCQ Questions Class 12 Physics Chapter 10
Wave Optics Multiple Choice Questions with Answers Class 12 Physics Chapter 10 PDF is available.
Multiple Choice Questions:
1) The phenomenon of interference of light is based on the principal of
a) Polarisation of light waves
b) Dispersion of light waves
c) Principle of superposition
d) Huygens principle
Ans: c) principle of superposition
2) The phenomenon of polarisation is based on the fact that
a) Light waves are longitudinal waves
b) Light waves are electromagnetic waves
c) Light waves are transverse electromagnetic waves
d) None
Ans: c) light waves are transverse electromagnetic waves
3) The locus of all points which oscillates in phase is called as
a) Waves
b) Wavefront
c) Wavelets
d) Both b and c
Ans: b) wavefront
4) The surface of constant phase is called as
a) Wavelets
b) Wave
c) Wavefront
d) None
Ans: c) wavefront
5) The energy of the wave travels in a direction ______ to the wavefront.
a) Parallel
b) Perpendicular
c) Both a and b
d) None
Ans: b) perpendicular
6) If the locus of points which have same amplitude and vibrate in same phase are spheres then it is called as
a) Spherical wave
b) Spherical wavefront
c) Plane wavefront
d) None
Ans: b) spherical wavefront
7) At a large distance from the source, a small portion of the sphere can be considered as a plane then it is called as
a) Plane wavefront
b) Spherical wavefront
c) Both a and b
d) None
Ans: a) plane wavefront
8) Each point of the wave front is the source of secondary disturbance and the wavelets originating from these points spread out
a) In only one direction
b) In all directions with the speed of wave
c) In all directions
d) None
Ans: b) in all directions with the speed of wave
9) Each point of the wavefront is the source of secondary disturbance and the wavelets originating from these points spread out in all directions with the speed of wave, this is called as
a) Principle of superposition
b) Huygens principle
c) Polarisation
d) None
Ans: b) Huygens principle
10) When a wave gets refracted into a denser medium the wavelength and speed of propagation decreases but
a) Frequency increases
b) Frequency remains same
c) Frequency also changes
d) None
Ans: b) frequency remains same
11) Go all angle of incidence greater than critical angle the waves are not refracted but undergo
a) Internal reflection
b) Total internal reflection
c) Total internal refraction
d) None
Ans: b) total internal reflection
12) When the source moves away from the observer the frequency as measured by the source will be smaller, this is called as
a) Interference of light
b) Doppler effect
c) Polarisation
d) None
Ans: b) Doppler effect
13) When waves are received from the source moving towards the observer, there is an apparent decrease in wavelength, this is called as
a) Red shift
b) Blue shift
c) Both a and b
d) None
Ans: b) blue shift
14) At particular point in the medium, the resultant displacement produced by a number of waves is the ______ of all the displacement produced by each of the waves.
a) Algebraic sum
b) Vector sum
c) Both a and b
d) None
Ans: b) Vector sum
15) When the phase difference between the displacement produced by the waves does not change with time then that two sources are called as
a) Colinear sources
b) Coherent sources
c) Both a and b
d) None
Ans: b) coherent sources
- In case you have missed:- Previous Chapter MCQ Questions
16) The intensity is directly proportional to the
a) Cube of the amplitude
b) Amplitude
c) Square of the amplitude
d) None
Ans: c) square of the amplitude
17) When the two displacement are out of phase and two displacement cancel out to give zero intensity, then it is called as
a) Constructive interference
b) Destructive interference
c) Both a and b
d) None
Ans: b) destructive interference
18) For destructive interference, the resultant intensity is
a) Maximum
b) Minimum
c) Zero
d) None
Ans: c) zero
19) When the two displacement are in phase and the intensity will be maximum then it is called as
a) Constructive interference
b) Destructive interference
c) Polarisation
d) None
Ans: a) constructive interference
20) The bending of ray of light about the edges or corners of an obstacle and introducing into the region of shadow is called as
a) Interference
b) Polarisation
c) Diffraction
d) Dispersion
Ans: c) diffraction
21) The expression for fringe width is given as
a) Wavelength*D*d
b) Wavelength*D/d
c) D*d/wavelength
d) None
Ans: b) wavelength*D/d
22) In case of diffraction pattern, the intensity falls as we go to successive Maxima ___
a) Towards the centre
b) Away from the centre
c) Away from the centre on either side
d) None
Ans: c) away from the centre on either side
23) In interference and diffraction, light energy is
a) Distributed
b) Redistributed
c) Both a and b
d) None
Ans: b) redistributed
24) The reciprocal of the minimum separation of two points seen as distinct is called as
a) Resolving power of telescope
b) Resolving power of compound microscope
c) Resolving power of microscope
d) None
Ans: c) resolving power of microscope
25) Resolving power of the microscope can be determined basically from which of the following quantity
a) Velocity
b) Refractive index
c) Wavelength
d) Both b and c
Ans: c) wavelength
26) The Fresnel distance is given by the equation
a) Wavelength/a2
b) a2/wavelength
c) Wavelength*a2
d) None
Ans: b) a2/wavelength
27) Polarised light can also be produced by reflection at a special angle which is called as
a) Polarising angle
b) Reflection angle
c) Brewster angle
d) None
Ans: c) Brewster angle
28) The natural light i.e. the light from the sun is
a) Plane polarised
b) Polarised
c) Unpolarised
d) Partially polarised
Ans: c) unpolarised
29) A Polaroid is the one which transmits only one component _____ to special axis.
a) Perpendicular
b) Parallel
c) Normal
d) None
Ans: b) parallel
30) The light transmitted by Polaroid is called as
a) Linearly polarised light
b) Partially polarised light
c) Plane polarised light
d) Both a and c
Ans: d) both a and c
- In case you have missed:- Next Chapter MCQ Questions