Physics - Light

Quiz
•
Physics
•
9th - 10th Grade
•
Hard
AMOGH G
Used 89+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Which of the following can make a parallel beam of light when light from a point source is incident on it?
Concave mirror as well as convex lens
Convex mirror as well as concave lens
Two plane mirrors placed at 90° to each other
Concave mirror as well as concave lens
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
-30cm
-20cm
-40cm
-60cm
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Under which of the following conditions a concave mirror can form an image larger than the actual object?
When the object is kept at a distance equal to its radius of curvature
When object is kept at a distance less than its focal length
When object is placed between the focus and centre of curvature
When object is kept at a distance greater than its radius of curvature
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
A light ray enters from medium A to medium B as shown in figure. The refractive index of medium B relative to A will be
Greater than Unity
Less than Unity
Equal to Unity
Zero
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Magnification produced by a rear view mirror fitted in vehicles Is
Less than one
More than one
Equal to one
can be more than or less than one depending upon the position of the object in front of it.
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?
15 cm in front of the mirror
30 cm in front of the mirror
between 15 cm and and 30 cm in front of the mirror
more than 30 cm in front of the mirror
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
A full length image of a distant tall building can definitely be seen by using
Concave mirror
Convex mirror
Plane mirror
both concave as well as plane mirror
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