30
Minutes
55
Questions
1 / -0
Marking
Q1. An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is:
2 cm
4 cm
10 cm
22 cm
Q2. Focal length of plane mirror is
At infinity
Zero
Negative
None of these
Q3. 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
Q4. In order to obtain a magnification of, -0.6 (minus 0.6) with a concave mirror, the object must be placed:
At the focus
Between pole and focus
Between focus and center of curvature
Beyond the center of curvature
Q5. A ray of light that strikes a plane mirror PQ at an angle of incidence of 30⁰, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is:
30⁰
45⁰
60⁰
90⁰
Q6. Image formed by plane mirror is
Real and erect
Real and inverted
Virtual and erect
Virtual and inverted
Q7. 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
-30 cm
-20 cm
-40cm
-60 cm
Q8. A man runs towards the plane mirror at 2 m/s. The relative speed of his image with respect to him will be:
4 ms⁻¹
2 ms⁻¹
8 ms⁻¹
10 ms⁻¹
Q9. An object is placed at 100 mm in front of a concave mirror which produces an upright image (erect image). The radius of curvature of the mirror is:
Less than 100 mm
Between 100 mm and 200 mm
Exactly 200 mm
More than 200 mm
Q10. A concave mirror gives real, inverted and same size image if the object is placed
At F
At infinity
At C
Beyond C
Q11. 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
Q12. A concave lens form the image of an object which is :
Virtual inverted and diminished
Virtual upright and diminished
Virtual inverted and enlarged
Virtual upright and enlarged
Q13. Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
10 cm
20 cm
30 cm
35 cm
Q14. Power of the lens is -40, its focal length is
4m
-40m
-0.25m
-25m
Q15. The diagrams showing the correct path of the ray after passing through the
II and III only
I and II only
I, II and III
I, II and IV
...and 40 more challenging questions available in the interactive simulator.