Physics
Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I.Diffusion II.Refraction III.Internal reflection

II and III
I and II
I, II and III
I and III

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Physics
Air moves from the region where the air ________

Humidity is high to the region where the humidity is low
Pressure is high to the region where the pressure is low
Humidity is low to the region where the humidity is high
Pressure is low to the region where the pressure is high

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