Which of the following reason is correct about an optical illusion in which atmospheric refraction by a layer of hot air distorts or inverts reflections of distant objects?
Answer with explanationAnswer: Option B
Due to unequal heating of different parts of the atmosphere
An air bubble in water will act like a
Answer with explanationAnswer: Option C
The lens which have atleast one inward curved surface is a concave lens. Concave ens is a diverging lens as it spreads out light rays that have been refracted through it.
A concave lens is thinner at its centre than at its edges.
Rate of evaporation increases with –
Answer with explanationAnswer: Option A
Temperature: The rate of evaporation increases with an increase in temperature.
Surface area: The rate of evaporation increases with an increase in surface area.
Humidity: The amount of water vapour present in the air is called humidity.
The rate of evaporation decreases with an increase in humidity.