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- 1. Multiple Choice
Pinhole camera is based on the ___________
Rectilinear propagation of light
Rectangular propagation of light
Circular propagation of light
None of these
- 2. Multiple Choice
Shadow of an object is always
Colourful
White
Black
Transparent
- 3. Multiple Choice
When we move an object away from the source of light, the shadow of the object _____________
Become bigger
Becomes smaller
Remains the same
None of these
- 4. Multiple Choice
When green light falls on a blue object, the colour of the shadow is _______
Green
Blue
White
black
- 5. Multiple Choice
WHERE WOULD BE A SHADY PLACE TO STAND ON A SUNNY DAY ?
IN THE MIDDLE OF A FOOTBALL GROUND
IN THE SEA
UNDER A TREE
NONE OF THE ABOVE
- 6. Multiple Choice
which of the characteristics is not exhibited by the shadow of an object?
erect
same colour as the object
can be formed on screen
can be bigger than the object
- 7. Multiple Choice
A plane mirror form an image of an object because it ........ light from the object
Absorbs
Emits
Passes
Reflects
- 8. Multiple Choice
This is not a beam of light
The headlight of a car
A torch shines
Light from firefly
Projector onto a screen
- 9. Multiple Choice
When the left side of an object appears as the right side of the image and vice versa, this phenomenon is called
Literally inversion
Lateral Invasion
Lateral Inversion
Literally Invasion
- 10. Multiple Choice
which of these are required to form the shadow of a ball
Torch
Ball
Screen
All of these
- 11. Multiple Choice
Image formed in a pinhole camera is always
Erect
Inverted
Parallel
None of these
- 12. Multiple Choice
Where will the tree's shadow be?
A
B
C
- 13. Multiple Choice
Which will make the darkest shadow? Light shining on a...
sheet of thin tissue paper
glass window
wooden chopping board
none of the above
- 14. Multiple Choice
What does reflection mean?
Light bouncing off an object.
Light is bending around an object.
Light is moving through and object.
This is no light.
- 15. Multiple Choice
What is the best explanation for Mickey seeing himself in the mirror?
Refraction
Absorption
Reflection
Flipped
- 16. Multiple Choice
There is light on the Earth even on a dark, cloudy day. This is because clouds are:
Opaque
Translucent
Transparent
Luminous
- 17. Multiple Choice
Where are periscopes used ?
Fire departments
Submarines
Military
Hospitals
- 18. Multiple Choice
Which of the following properties are used while using the periscope ?
gravitational force
reflection of light
property of lights and beams
None of these
- 19. Multiple Choice
We are able to most of the things around us because of
Regular Reflection
Irregular Reflection
- 20. Multiple Choice
How many regions does an eclipse shadow have?
1
2
3
4
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