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- 1. Multiple Choice
Parallel rays, from the top of a distant tree, incident on a concave mirror, form an image on the screen. The correct diagram showing the image is
A
B
C
D
- 2. Multiple Choice
In an experiment to trace the path of a ray of light passing through a rectangular glass slab, four students tabulated their observations as given below. Which student performed the experiment most correctly?
A
B
C
D
- 3. Multiple Choice
For the refraction through a rectangular glass slab the diagram is given below. The angle of incidence, angle of emergence and angle of refraction are respectively
X,P,M
X,M,P
Y,M,P
Y,N,P
- 4. Multiple Choice
A student determined the focal length of a device 'X‘ by focusing a distant object on the screen as shown in the following diagram. Select the correct option.
Device 'X‘ is a concave mirror and distance 'd‘ is its focal length
Device 'X‘ is a concave mirror and distance 'd‘ is its radius of curvature
Device 'X‘ is a convex lens and distance 'd‘ is its radius of curvature
Device 'X‘ is a convex lens and distance 'd‘ is its focal length
- 5. Multiple Choice
Image formed by plane mirror is _______________
Real and erect
Real and inverted
Virtual and erect
Virtual and inverted
- 6. Multiple Choice
A concave mirror gives real, inverted and same size image if the object is placed at _______________
At F
At infinity
At C
Beyond C
- 7. Multiple Choice
The full length image of a distant tall building can be seen by using
concave mirror
convex mirror
concave lens
convex lens
- 8. Multiple Choice
If the magnification of a lens has positive value , the image is
Real
virtual and erect
inverted
none of these
- 9. Multiple Choice
The power of the lens is +2.5D. Its focal length in cm will be
+40
-40
+80
-80
- 10. Multiple Choice
The magnification produced by a rear view mirror that is used in the vehicles is
less than 1
more than 1
equal to 1
less than 1 or more than 1
- 11. Multiple Choice
In optics an object which has higher refractive index is called _____________
rarer medium
opaque
Denser medium
mirror
- 12. Multiple Choice
Focal length of the lens is 50cm, its Power is _____________
D
2D
3D
4D
- 13. Multiple Choice
A concave mirror gives virtual, and enlarged image of the object when the object is _____________
Between P and F
Between F and C
Between C and P
Behind mirror
- 14. Multiple Choice
A ray of light travelling in air enters obliquely into water, then the ray will bend
Normal
towards normal
Away from normal
Reflects back
- 15. Multiple Choice
Velocity of light in Air
3x10^8 m/s
3x10^9 m/s
9x10^8 m/s
8x10^8 m/s
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