PART - 2 CH - 14 Waves — Physics STD 11 Science — Question

If suddenly the gravitational force of attraction between the earth and a satellite revolving around it becomes zero, then what will happen to the satellite?

A wooden charcoal and a metal piece of the same dimension are heated in the same oven to the same temperature and then removed in the dark. Which one would shine more and why?

Answer the following questions:

What is the frequency of oscillation of a simple pendulum mounted in a cabin that is freely falling under gravity?

Why can an engine working under isothermal conditions produce no useful work?

Which physical quantity is conserved in simple harmonic motion?

Two sound sources produce 12 beats in 4 seconds. By how much do that frequencies differ?

When several passengers are standing in a moving bus, it is said to be dangerous. How will you justify this statement?

A hole is made in a container at a depth below the free surface of the liquid whose radius is r. Write the formula for the ejection velocity of the liquid jet coming out of this hole.

A person is viewing an extended object. If a converging lens is placed in front of his eyes, will he feel that the size has increased?