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Home
Wave Optics Test - 7
Wave Optics Test - 7
Result
Wave Optics Test - 7
/
Score
-
Rank
Time Taken:
-
Question
1/10
4 / -1
According to Newton's corpuscular theory, the speed of light is
Correct
Wrong
Skipped
A
same in all the medium
Correct
Wrong
Skipped
B
lesser in rarer medium
Correct
Wrong
Skipped
C
lesser in denser medium
Correct
Wrong
Skipped
D
independent of the medium
Question
2/10
4 / -1
Which one of the following property of light does not support wave theory of light?
Correct
Wrong
Skipped
A
Light obeys laws of reflection and refraction
Correct
Wrong
Skipped
B
Light waves get polarised
Correct
Wrong
Skipped
C
Light shows photoelectric effect
Correct
Wrong
Skipped
D
Light shows interference
Question
3/10
4 / -1
In Huygen's wave theory, the locus of all points in the same state of vibration is called
Correct
Wrong
Skipped
A
a half period zone
Correct
Wrong
Skipped
B
oscillator
Correct
Wrong
Skipped
C
a wave front
Correct
Wrong
Skipped
D
a ray
Question
4/10
4 / -1
The wavefront of distant source of unknown shape is approximately
Correct
Wrong
Skipped
A
spherical
Correct
Wrong
Skipped
B
cylindrical
Correct
Wrong
Skipped
C
elliptical
Correct
Wrong
Skipped
D
plane
Question
5/10
4 / -1
Which of the following generates a plane wavefront?
Correct
Wrong
Skipped
A
α – rays
Correct
Wrong
Skipped
B
β – rays
Correct
Wrong
Skipped
C
γ – rays
Correct
Wrong
Skipped
D
None of these
Question
6/10
4 / -1
The wave theory of light, in its original form, was first proposed by
Correct
Wrong
Skipped
A
Issac Newton
Correct
Wrong
Skipped
B
Christian Huygen's
Correct
Wrong
Skipped
C
Thomas Young
Correct
Wrong
Skipped
D
Augustin Jean Fresnel
Question
7/10
4 / -1
Which of the following cannot be explained on the basis of wave nature of light? I. Polarisation II. Optical activity III. Photoelectric effect 1V. Compton effect
Correct
Wrong
Skipped
A
III and IV
Correct
Wrong
Skipped
B
II and III
Correct
Wrong
Skipped
C
I and III
Correct
Wrong
Skipped
D
II and IV
Question
8/10
4 / -1
Select the right option in the following
Correct
Wrong
Skipped
A
Christian Huygens, a contemporary of Newton established the wave theory of light by assuming that light waves were transverse
Correct
Wrong
Skipped
B
Maxwell provided the theoretical evidence that light is transverse wave
Correct
Wrong
Skipped
C
Thomas Young experimentally proved the wave behaviour of light and Huygen's assumption
Correct
Wrong
Skipped
D
All the statements given above, correctly answers the question what is light?
Question
9/10
4 / -1
A is an essential condition for coherent sources. Here, A refers to
Correct
Wrong
Skipped
A
constant phase difference
Correct
Wrong
Skipped
B
equal amplitude
Correct
Wrong
Skipped
C
Both (a) and (b) are correct
Correct
Wrong
Skipped
D
Both (a) and (b) are incorrect
Question
10/10
4 / -1
In a double slit interference experiment, the fringe width obtained with a light of wavelength 5900 Å was 1.2 mm for parallel narrow slits placed 2 mm apart. In this arrangement, if the slit separation is increased by one-and-half times the previous value, then the fringe width is
Correct
Wrong
Skipped
A
0.9 mm
Correct
Wrong
Skipped
B
0.8 mm
Correct
Wrong
Skipped
C
1.8 mm
Correct
Wrong
Skipped
D
1.6 mm
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Solutions
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Re-attempt
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Correct (
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Skipped (
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