Physics Quiz - 2, General Knowledge

RADAR is used for

Materials for rain-proof coats and tents owe their water-proof properties to

Sound of frequency below 20 Hz is called

On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because

Suitable impurities are added to a semiconductor depending on its use. This is done in order to

Stars twinkle because

It takes much longer to cook food in the hills than in the plains, because

Moment of inertia is

Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?

Inside an aeroplane, flying at a high altitude,

Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?

One thousand microns is equal to

Sound travels at the fastest speed in

oil raise up the wick in a lamp. The principle involves

Superconductors are substances which

Light travels at the fastest speed in

Railway tracks are banked on curves

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

Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?

Intensity of sound at a point is ____ its distance from the source.

Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from