Questions

Which of the following device is used to measure humidity?

An example of longitudinal waves (in gas as a medium) is ______.

Who was the first Indian astronaut to travel in space?

The new symbol of Indian currency is designed by

At what temperature (in Fahrenheit) pure water freezes?

Sextant is an instrument used in which of the following ?

________________ refers to the superposing of two or more coherent waves to produce regions of maxima and minima in space, according to the principle of superposition.

Weight (W) of a body can be given by the formula