HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions

The mutual inductance of a pair of adjacent coils is 1.5 H. If the current is one coil changes from 5 A to 10 A in 0.1 s, the rate of change of magnet flux linkage is ______.

Explain ferromagnetism on the basis of the domain theory.

Explain ferromagnetism on the basis of the domain theory.

The internal energy of one mole of argon is ______.

Explain the origin of paramagnetism on the basis of atomic structure.

Explain the origin of paramagnetism on the basis of atomic structure.

Derive an expression for the electric potential at a point due to a short electric dipole. Hence, write the expression for the electric potential at a point (i) dipole axis and (ii) on the dipole equator.

In a CE amplifier, the current gain is 80 and the emitter current is 9 mA. The base current is ______.

What is a photocell or photoelectric cell?

Describe its construction and working with a neat labelled diagram.

Find the wavelength and wave number of the first member of the Balmer series in Hydrogen spectrum. (`R =1.097xx10^7m^(-1)`)

A rectangular coil of wire 50 turn each of area 6 x 10^-4 m² is freely suspended in a field of 3 x 10^-2 Wb / m². Calculate the current flowing through the coil when it deflects through 60°, when torsional constant is 3.82 x 10^-6 SI unit.

Describe construction and working of a photo cell with the help of neat diagram.

State laws of reflection.

The internal energy of one mole of argon at 300 K is ______. (R = 8.314 J/mol.K)

When the load resistance across a solar cell is zero, the current in the external circuit passed by the solar cell is called ______.

The de-Broglie wavelength of the electron in the hydrogen atom is proportional to ______.

State the dimensions of magnetization.

State the dimensions of magnetization.

What is the rotational analogue of Newton's second law of motion?