Dispersion of Light
If an object is extremely dense, light:
passes through it
never passes through it
leaves it at once
never leaves it
never passes through it
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The speed of light in ‘vacuum’ isA. 3,000 km/s
B. 30,000 km/s
C. 300,000 km/s
D. 3,000,000 km/s
Things that give off light are known as
A. non luminous objects
B. luminous objects
C. transparent objects
D. opaque objects
We see different colors on screen because dots change their
A. colors
B. brightness
C. sharpness
D. size
The sensitive screen at the back of eye is called
A. blind spot
B. conjunctiva
C. cornea
D. retina
When light enters water from air, its speed decreases to
A. 20,000 km/s
B. 25,000 km/s
C. 200,000 km/s
D. 250,000 km/s
The number of red cells in an eye is
A. 320 million
B. 120 million
C. 220 million
D. 200 million
The critical angle is basically the
A. angle of incidence
B. angle of refraction
C. angle of reflection
D. angle of rarefaction
2 responses to “If an object is extremely dense, light:”
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Jab object extremely dense hota hai, uske particles bohot closely packed hote hain.
Is wajah se light ke liye andar se guzarna possible nahi hota โ wo ya to absorb ho jaati hai ya reflect.Correct:
> If an object is extremely dense, light never passes through it
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thanks. it’s been corrected now.
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