निम्नलिखित में से

Velocity of the sound is minimum in-

Which statement is true regarding infrasound?

Which type of mirror is utilized in solar furnaces to focus sunlight and generate heat?

One Kilowatt hour is equal to—

Water gets cooled, when ice is immersed in it, this phenomenon is known as

If input frequency of a full wave rectifier be n, then output frequency would be-

In gymnastics, which event is performed on a large floor mat?

In a coil with n turns, what happens to the induced electromotive force (EMF) if the number of turns is doubled while the magnetic flux remains constant?

Which pioneer scientist used radio waves to transmit signals over distances of several kilometres in the 1890s?

Temperature of the Sun is measured by