TYPICAL NUMERIC QUESTIONS FOR PHYSICS I REGULAR
QUESTIONS TAKEN FROM CUTNELL AND JOHNSON
LIGHT AND OPTICS
1.
A ray of light is reflected from two plane mirror surfaces as shown in the figure.
What
are the correct values of
α
and
β
?
Value of
α
Value of
β
A)
26°
26°
B)
26°
64°
C)
38°
52°
D)
52°
26°
E)
64°
26°
2.
An object is placed 1 m in front of a plane mirror.
An observer stands 3 m behind the
object.
For what distance must the observer focus his eyes in order to see the image of
the object?
A) 1 m
B)
2 m
C)
3 m
D)
4 m
E)
5 m
3.
The focal length of a spherical concave mirror is 20 cm.
What is its radius of curvature?
4.
The radius of curvature of a spherical convex mirror is 50 cm.
What is its focal length?
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