Oscillations — Physics STD 11 Science — Question

Define temperature.

Give the magnitude and direction of the net force acting on.
A car moving with a constant velocity of 30km/h on a rough road.

Give the magnitude and direction of the net force acting on.
A high-speed electron in space far from all material objects, and free of electric and magnetic fields.

What are the factors on which moment of inertia of a body depends?

The stress-strain graph for material A and B are shown in the figure (drawn on same scale). Which of the two is stronger material? Justify your answer.

One of your friends argues that he has read in the previous chapters that there can be no electric field inside a conductor. And hence there can be no current through it. What is the fallacy of this argument?

Name the apparatus used to demonstrate the phenomenon of the reflection of waves.

When the pressure on a sphere is increased by 80 atmospheres, then its volumes decreases by 0.01%. Find the bulk modulus of elasticity of the material of sphere.

An experimenter measures the length of a rod. In the cases listed, all motions are with respect to the lab and parallel to the length of the rod. In which of the cases the measured length will be minimum?

1. The rod and the experimenter move with the same speed v in the same direction.
2. The rod and the experimenter move with the same speed v in opposite directions.
3. The rod moves at speed v but the experimenter stays at rest.
4. The rod stays at rest but the experimenter moves with the speed v.

If a cube is melted and is casted into a sphere, does moment of inertia about an axis through centre of mass increases or decreases.