Questions

In a hydrogen atom, an electron moves in an orbit of radius 5.0 x 10-11 m with a speed of 2.2 x 106 m/s. What is the equivalent current? (Electronic charge = 1.6 x10-19 C)

Consider a hypothetical planet with a mass equal to half that of Earth and radius is one-third that of Earth. If g is the acceleration due to gravity on Earth, the acceleration due to gravity on the planet will be

A wooden block of mass m1 kg accelerates at m/s when a force of 5 N acts on it. Another block of mass m2 kg accelerates at 20 m/s when the same force acts on it. If both the blocks are tied together and the same force acts on their combination, the acceleration will be about

Equinox means the date when ___________.

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.

A drug or other substance that produces sleep

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

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

Because she had a ______________ demeanour, she was a desirable friend.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Photography is the _____________ we can get to stopping time. The camera is our pause button, the cork we use to stop time from running out. And the photo album is the most potent time machine ever ____________, one that transports you to a curated past where everything exists ________ you choose to remember it,one that lets you revisit ________ just people and places and ages, but the hidden crannies of ________ own memory and the strange landscape of emotions that lies beyond.

but the hidden crannies of ________ own memory and