Questions

_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.

The work done by centripetal force is ______.

Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.

Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain period. Find the displacement (in m) of the body in that period.

Through which does light travel best?

In April 2017, the G20 Digital Ministerial Meeting on Digital Economy was held in which country?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

to have as belonging to one; own.

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Cross that bridge when you come to it.