Physics
When a person sitting on a swing stands up on the swing, the frequency of oscillation

Increases
Becomes infinite
Does not change
Decreases

ANSWER DOWNLOAD EXAMIANS APP

Physics
Mirage is due to:

Unequal heating of different parts of the atmosphere
Depletion of ozone layer in the atmosphere
Equal heating of different parts of the atmosphere
Magnetic disturbances in the atmosphere

ANSWER DOWNLOAD EXAMIANS APP