Physics
A mirage occurs because of

Reflection by hot ground
Interference of light
Diffraction of light
Total internal reflection by layers of air

ANSWER DOWNLOAD EXAMIANS APP

Physics
A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

None of these
Increasing the radius of the capillary tube
Increasing the height of water in the vessel
Decreasing the radius of the capillary tube

ANSWER DOWNLOAD EXAMIANS APP

Physics
Analog synthesis refers to a technology based on

Representing data in terms of measurable physical quantities.
Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.
Interfacing synthesizer equipment.
Representing physical quantities as numbers.

ANSWER DOWNLOAD EXAMIANS APP

Physics
On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because :

Metals are good conductors of heat
Plastics have a higher thermal conductivity than metals
Plastics have a lower density than metals
Metals have higher thermal capacity than plastics

ANSWER DOWNLOAD EXAMIANS APP