Rectilinear Propagation of Light NDA Questions

NDA Physics

Rectilinear Propagation of Light MCQ Questions


1.
What happens to the path of light when it encounters an opaque object?
A.
It bends around the object
B.
It is absorbed by the object
C.
It continues to travel in a straight line
D.
It reflects off the object
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ANSWER :
B. It is absorbed by the object
2.
Which property of light allows it to travel in a straight line?
A.
Wavelength
B.
Speed
C.
Particle nature
D.
Wave nature
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ANSWER :
C. Particle nature
3.
Which of the following is NOT an example of rectilinear propagation of light?
A.
Shadows formed by objects in sunlight
B.
Formation of rainbows
C.
Image formation in pinhole cameras
D.
Projection of images on a screen
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ANSWER :
B. Formation of rainbows
4.
If a ray of light passes from air into water, what happens to its speed?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Depends on the wavelength
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ANSWER :
B. Decreases
5.
What is the phenomenon called when light changes direction upon entering a different medium?
A.
Reflection
B.
Refraction
C.
Dispersion
D.
Diffraction
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ANSWER :
B. Refraction
6.
In which medium does light travel fastest?
A.
Air
B.
Water
C.
Glass
D.
Vacuum
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ANSWER :
D. Vacuum