Questions

UNESCO Headquarters is in

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

An incident ray strikes a plane mirror at an angle of 20 deg with the mirror. The angle between the incident ray and reflected ray is ____.

What is the range of frequencies of sound waves audible to human beings?

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'. 

To who (1)/ did you (2)/ speak last night? (3)/ No error (4)

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.

The painters painted the entire building.

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.

The payment of dues have been _________ delayed , informed the executive to the client.

In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one, which best expresses the same sentence in Passive/Active voice.

They are going to watch a drama tomorrow.