A real Gas can act as an ideal gas at -
1st Law of thermodynamics is normally related to
Density of water is 1G/CC. it is strictly valid at -
Why clouds are float in atmosphere?
Twinkling of stars is due to -
Near Point for Long sightedness defected person is-
Plate of Blue glass appears blue in sunlight because -
For total internal reflection, ray of Light Has to pass through -
Dioptre is the unit of
What is a zoom lens?
Light beam which is highly directional is called:
The word 'Insolation' means -
Ozone in outer atmosphere Helps us-
Maximum biological damage occours due to -
Distant objects are visible as a little out of focus in the condition:
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