Physics

Mirage is formed due to both Refraction and Total internal reflection of light. A mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky.

The usual cause of sea breeze is the difference in specific heat capacity between land and water Land heats and cools more quickly than water.

Human ear perceives frequencies between 20 Hz (lowest pitch) to 20 kHz (highest pitch).

If an empty cylinder is half filled with a liquid, its center of gravity is shifted downwards.

The friction between two surfaces can be increased if the surfaces are pressed into each other with greater force. The harder the brakes are pushed, the harder the pads get pressed into the discs and the more friction is generated.

Any object which allows light to pass through it is known as a transparent object. The colour of any transparent object is the colour of the light transmitted by it. A red rose appears red in white light because it absorbs all colours except red. However, when seen in green light, it looks black because the red colour of the rose is absorbed by the green light.