HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

Explain black body radiation spectrum in terms of wavelength

Define the coefficient of self-induction.

Write the SI unit and dimention of of co-efficient of self induction

What is perfectly black body ? Explain Ferry’s black body.

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A current through a coil of self-inductance 10 mH increases from 0 to 1 A in 0.1 s. What is the induced emf in the coil?

The total energy of a body of mass 2 kg performing S.H.M. is 40 J. Find its speed while crossing the center of the path.

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Energy stored in a capacitor and dissipated during charging a capacitor bear a ratio.

Efficiency of a Carnot engine is large when ______.

The efficiency of a Carnot cycle is 75%. If the temperature of the hot reservoir is 727°C, calculate the temperature of the cold reservoir.

A Carnot refrigerator operates between 250°K and 300°K. Calculate its coefficient of performance.

A system is taken to its final state from initial state in hypothetical paths as shown figure calculate the work done in each case.

Deduce the expressions for the kinetic energy and potential energy of a particle executing S.H.M. Hence obtain the expression for the total energy of a particle performing S.H.M and show that the total energy is conserved. State the factors on which total energy depends.

At what distance from the mean position is the speed of a particle performing S.H.M. half its maximum speed. Given the path length of S.H.M. = 10 cm.

Explain why the inductance of two coils connected in parallel is less than the inductance of either coil.

When the displacement of a simple harmonic oscillator is half of its amplitude, its P.E. is 3 J. Its total energy is ______ 

Deduce the expression for kinetic energy, potential energy, and total energy of a particle performing S.H.M. State the factors on which total energy depends. 

Two pure inductors each of self-inductance L are connected in series, the net inductance is ______  

A coil of self-inductance 3 H carries a steady current of 2 A. What is the energy stored in the magnetic field of the coil? 

Define self-inductance.

Obtain an expression for the self-inductance of a solenoid.