Questions

Calculate the work done by the force of gravity when a satellite moves in an orbit of radius 40,000 km around the earth.

In which direction does the tail of a comet point toward?

Two circles touch each other internally. The radius of the larger circle is 6 cm and the distance between the centre is 2 cm, then the radius (in cms) of the other circle is

If sin 30° + cos 45° = X, then the value of X.

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

Be appropriate or applicable

A sentence has been given in Direct/Indirect Speech. Out of the four given alternatives, select the one which best expresses the same sentence in
Indirect/Direct Speech.

He replied, “I cannot do so.”

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

His friends claimed that he (been depressed) for a few months.

In terms of size, Saturn ranks no. ___ in our Solar System.