Questions

______________ of a wave is the rate of transfer of energy per unit area perpendicular to the direction of travel of the wave.

When the vibrating object moves forward, it creates a region of high pressure in the medium called ______.

Postage Meter was invented by

With which of the following body organ is 'pace-maker' associated?

A few organisms can tolerate and thrive in a narrow range of temperatures. Such organisms are called ___________.

Which of the following is NOT a primary green house gas in the earth's atmosphere?

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.

Nascent

.......... received the Polly Umrigar Award, and is the first Indian cricketer to get it on three occasions.