Laws of Motion — Physics STD 11 Science — Question

Why is the necessary for a pendulum performing simple harmonic motion that its amplitude be less than its length?

A ring and a circular disc of different materials have equal masses and equal radii. Which one will have a larger moment of inertia about an axis passing through its centre of mass perpendicular to its plane?

At which point on its path a projectile has the smallest speed?

Name the type of motion associated with the molecules of a gas.

Choose the correct alternative:
Acceleration due to gravity increases/ decreases with increasing depth (assume the earth to be a sphere of uniform density).

If the number of gas molecules is doubled, what will be the effect on the value of pressure and kinetic energy?

How is the path difference related to phase difference?

Write the expression for distance covered in n^th the second by a uniformly accelerated body.

Read each statement below carefully and state, with reasons and examples, if it is true or false:

A scalar quantity is one that

Does not vary from one point to another in space.

What is the reason that generated sound in air can't be heared or less heares in water to the observer?