Wavefront and Huygens' Principle (Laws of reflection and refraction using Huygens principle ) NEET Questions

Physics - Optics

Wavefront and Huygens' Principle (Laws of reflection and refraction using Huygens principle ) MCQ Questions


7.
What is the shape of the wavefront for a point source in an isotropic medium?
A.
Plane
B.
Cylindrical
C.
Spherical
D.
Elliptical
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ANSWER :
C. Spherical
8.
A wavefront is defined as:

NEET - 2016

A.
A surface of constant phase
B.
A surface normal to wave propagation
C.
A line along the wave direction
D.
None of these
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ANSWER :
A. A surface of constant phase
9.
According to Huygens’ principle, each point on a wavefront acts as:
A.
A source of a new wave
B.
A point source
C.
A sink of the wave
D.
An absorber of light
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ANSWER :
A. A source of a new wave
10.
Huygens' principle assumes that:
A.
Light travels in straight lines
B.
Light consists of particles
C.
Light travels in curved paths
D.
Light follows probabilistic paths
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ANSWER :
C. Light travels in curved paths
11.
Huygens’ principle explains:

NEET - 2017

A.
Reflection only
B.
Refraction only
C.
Both reflection and refraction
D.
None of these
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ANSWER :
C. Both reflection and refraction
12.
Which of the following statements about wavefronts is true?
A.
Wavefronts and rays are parallel
B.
Wavefronts are always planar
C.
Wavefronts can be spherical or planar
D.
Wavefronts are random in shape
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ANSWER :
C. Wavefronts can be spherical or planar