Physics 2nd Paper CQ-Cumilla Board-2023

What is called heat engine?

Why are two types of molar specific heat of gas? Explain.

Determine the amount of work done by the engine.

Whether the efficiency will be halved if the temperature of the sink is doubled of the Carnot engine of the stimulusAnalyze mathematically.

What is called grating constant?

Why convex lens is used in Fraunhofer class of diffraction? Explain.

Determine the distance between the points $O$ and $P$ in the figure.

What will be the change of angular position of the $12^{3}$ dark fringe, if the whole experiment is performed in the medium of refractive index 1.30? Analyze mathematically.

What is called blackbody?

The length contraction is increased when the velocity of the body is increased-Explain.

Determine the work function in $\mathrm{MeV}$ unit of the metal in the stimulus.

Stopping potentials decreased if the wavelength of the light incident on the metal is increased-Analyze mathematically in the light of the stimulus.

What is called capacitor?

Compare between capacitor and electric cell.

Calculate the equivalent capacitance of the circuit.

In which capacitor in the circuit will have the maximum amount of stored energy? Give your opinion with mathematical analysis.

State the Kirchhoff's second law.

What do you mean by the temperature coefficient of resistance of manganin is $3 \times 10^{-5} \mathrm{~K}^{-1}$ ?

Determine $I_{1}$ of the circuit in the stimulus.

How to connect the two cells to produce more heat in 3 external resistance of the stimulus? Analyze mathematically