Physics 2nd Paper CQ-Barishal Board-2019

Define nucleon.

Explain why impurity is mixed with intrinsic semiconductor.

Calculate currnent magnification factor of the circuit.

Give mathematical analysis if the student will be success 3 his objective.

Define magnetic field intensity.

Explain why the wave property of large body is not noticeable.

Calculate the equivalent capacitance of the circuit.

Analyze mathematically the change in stored energy of the circuit of $\mathrm{C}_{3}$ is removed from the circuit.

What is a shunt?

What changes will occur of surface charge density of a spherical conductor, if its charge is increased 4 times?

Determine the mean life of element $C$.

Decay time of $30 \%$ of element A and of $24 \%$ of element B will be the same or not - Verify.

What is entrophy?

Explain that $\mathbf{C}_{\mathbf{r}}$ is smaller that $\mathbf{C}_{\mathbf{r}}$.

Determine the efticiency of the engine of the stem.

Give the mathematical analysis of process by which more work can be done for the same amount of expansion of gas.

What is electric dipole?

There is no electric field outside of a charged parallel plate capacitor - Explain.

How much resistance and in which way will be connected with $Q$ for null condition of the Wheatston Bridge?

Give mathematical analysis what is the relation of ratios of currents and resistance of ABC and ADC branch of the bridge.