Questions

Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s

A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of theocean floor. 

The area under a Velocity-Time graph represents ______________.

Who was known as Badshah Khan?

Which country taken over the Chair of the Group of 77 (G-77) for 2019?

Who discovered Antarctica?

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'.

I am better(A)/adapted to the(B)/climate than you.(C)/No error(D)