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


13.
The wavefront of a plane wave traveling in a homogeneous medium is:
A.
Cylindrical
B.
Spherical
C.
Elliptical
D.
Irregular
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ANSWER :
B. Spherical
14.
Which type of wavefront is associated with a parallel beam of light?
A.
Spherical
B.
Plane
C.
Conical
D.
Hyperbolic
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ANSWER :
B. Plane
15.
The laws of reflection and refraction can be derived from:

NEET - 2018

A.
Maxwell’s equations
B.
Huygens’ principle
C.
Newton’s laws
D.
Fermat’s principle
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ANSWER :
B. Huygens’ principle
16.
The speed of secondary wavelets in an isotropic medium is:
A.
Less than primary wave speed
B.
Greater than primary wave speed
C.
Same as the primary wave speed
D.
Depends on wave frequency
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ANSWER :
C. Same as the primary wave speed
17.
Huygens’ principle fails to explain:
A.
Polarization
B.
Diffraction
C.
Refraction
D.
Photoelectric effect
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ANSWER :
A. Polarization
18.
According to Huygens’ principle, a point source emits:

NEET - 2019

A.
A single wavefront
B.
Multiple wavelets
C.
A single pulse
D.
None of these
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ANSWER :
B. Multiple wavelets