The substance is made up of atoms and molecules that are constantly moving; When the temperature of a substance is increases, atoms and molecules vibrate faster

Here, the temperature of P is greater than that of Q which means the molecules of P are moving faster on the average than the molecules of Q

Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process. Two common forms of latent heat are latent heat of fusion (melting) and latent heat of vaporization (boiling). In both cases the change is endothermic, meaning that the system absorbs energy. Hence, thermal energy is stored as latent heat.

The current flowing through a conductor is given by:

Q = charge and t = time

Let wire be of length 1000 unit and cross area be also 1000 unit²

After stretching new length = 1.1% of 1000 = 1001

Volume is same (length x cross section)

1000 × 1000 = 1001 × A’

A’ = 1000 × 1000/1001

= 999

% change = -0.1%

R = ρ l/A

Taking log and differentiating

Substituting value

The minimum deviation δ_m is related to refractive index μ and angle of prism A by the prism:

The work done by moving coil (Change in kinetic energy) induces the electrical energy in the conductor.

This principle is used in electric generators.

Given.

V = 240 V and R = 60 Ω

Power consumed by resistance is given by

P = V × I

Current flowing through the circuit is given by,

I = V/R

I = 240/60

= 4 A

Net power consumed by resistor

P = 240 × 4 = 960 W

Wavelength of electromagnetic wave is given by