Rectilinear Propagation of Light NDA Questions

NDA Physics

Rectilinear Propagation of Light MCQ Questions


13.
Which law describes the reflection of light?
A.
Ohm's law
B.
Snell's law
C.
Newton's law of gravitation
D.
Law of reflection
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ANSWER :
D. Law of reflection
14.
Which of the following phenomena is explained by the refraction of light?
A.
Formation of shadows
B.
Dispersion of light
C.
Bending of light when passing from air to glass
D.
Polarization of light
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ANSWER :
C. Bending of light when passing from air to glass
15.
What type of lens is used to correct hyperopia (farsightedness)?
A.
Convex lens
B.
Concave lens
C.
Bifocal lens
D.
Plano-concave lens
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ANSWER :
A. Convex lens
16.
Which of the following statements about convex mirrors is true?
A.
They always form real images
B.
They always form virtual images
C.
They have a focal length equal to their radius of curvature
D.
They only form images larger than the object
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ANSWER :
B. They always form virtual images
17.
What is the phenomenon called when light waves cancel each other out due to their phase difference?
A.
Reflection
B.
Refraction
C.
Interference
D.
Diffraction
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ANSWER :
C. Interference
18.
Which of the following colors is a primary color of light?
A.
Red
B.
Cyan
C.
Yellow
D.
Magenta
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ANSWER :
B. Cyan