Motion in a Straight Line — Physics STD 11 Science — Question

What is the nature of waves produced in a tuning fork?

The given graph shows the variation of p-V versus p graph for different gases at constant temperature. Which of the following gas is ideal and why?

Consider the statements A and B in the previous question. Peltier eftect is caused:

1. Due to both A and B.
2. Due to A but not due to B.
3. Due to B but not due to A.
4. Neither due to A nor due to B.

If the angular momentum of a body is found to be zero about a point, is it necessary that it will also be zero about a different point?

Explain this statement clearly:
“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary:

1. Atoms are very small objects
2. A jet plane moves with great speed
3. The mass of Jupiter is very large
4. The air inside this room contains a large number of molecules
5. A proton is much more massive than an electron
6. The speed of sound is much smaller than the speed of light.

The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph where r is the distance of the point from the centre of the hollow spherical shell of uniform density.

A ball is dropped from a height of 90m on a floor. At each collision with the floor, the ball loses one tenth of its speed. Plot the speed-time graph of its motion between t = 0 to 12s.

When you come out of a river after a dip, you feel cold. Explain.

Can temperature on celsius scale and Kelvin scale related?

What is 1 eV?