Energy Changes Notes Questions with Answers PDF Download - 115

On heating a solid, as the separation of atoms increases the potential energy

1. decreases
2. remains constant
3. increases
4. becomes zero

Particle which explains about mass of matter is called

1. Higgs boson
2. protons
3. leptons
4. neutrons

Principle of superposition can be applied to

1. EM waves
2. sound waves
3. radio waves
4. all of above

In linear motion, the energy is given by 1⁄₂mv². Similarly, in rotational motion, the rotational energy is given by

1. 1/2 × I × Ω; where I: moment of inertia of the body, Ω: angular velocity
2. 1/2 × I² × Ω; where I: moment of inertia of the body, Ω: angular velocity
3. 1/2 × I × Ω²; where I: moment of inertia of the body, Ω: angular velocity
4. 1/2 × I² × Ω²; where I: moment of inertia of the body, Ω: angular velocity

If direction of current is from positive to negative, then it is called

1. electronic current
2. conventional current only
3. positronic current
4. protonic current