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- 1. Multiple Choice
Thin straight lines are called_______________
beams
rays
light
shadow
- 2. Multiple Choice
Light travels ---------- than sound ?
Slower
Medium
Faster
- 3. Multiple Choice
Light travels at the constant speed of ----------- in a vacuum ?
299792.458 km/h
289792.458 km/sec
299792.458 km/sec
- 4. Multiple Choice
The property of light is called as ------------ of light.
Rectilinear propagation
parallel propagation
natural propagation
- 5. Multiple Choice
------------ objects create shadows.
Opaque
Translucent
Transparent
None of these
- 6. Multiple Choice
Image formed by a pinhole camera is ………………..
down
straight
laterally inverted
virtual image
- 7. Multiple Choice
When screen is far away from the objects, the shadow will have no penumbra.
True
False
- 8. Multiple Choice
A_______ is formed when light is reflected from an object
Shadow
image
reflection
- 9. Multiple Choice
Region of absence of light
Light
Shadow
Reflection
- 10. Multiple Choice
Firefly is a living ----------- body.
water body
Non - Luminous
Luminous
- 11. Multiple Choice
The point where the incident ray falls is known as ?
point of reflection
Incident point
point of incidence
- 12. Multiple Choice
Who found the first pin hole camera ?
David Brewster
Joseph Nicephore Niepce
Thomas Edison
Giambattista Della Porta
- 13. Multiple Choice
An eclipse occurs when the ------------------ are in a straight line.
Earth and Sun
Sun and moon
Sun , moon and Earth
- 14. Multiple Choice
At noon the shadow of the building will be_________
long
short
wide
none of these
- 15. Multiple Choice
We Can See Objects In A Bright Room Because:
The objects give of light to the air
The objects reflect the light falling on them
The objects send light away from our eyes
Our eyes give of light to the objects
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