HSC Science (Electronics) १२ वीं कक्षा - Maharashtra State Board Important Questions

Define magnetization.

Explain ferromagnetism on the basis of the domain theory.

Explain the construction and working of the transformer. 

Obtain the expression for current sensitivity of moving coil galvanometer.

State how a moving coil galvanometer can be converted into an ammeter.

What is mass defect?

Define magnetization.

Explain ferromagnetism on the basis of the domain theory.

Explain the construction and working of the transformer. 

What is mass defect?

Write the functions of the following in communication systems:

Transmitter

Write the functions of the following in communication systems:

Receiver

Write a short note on the following:

Overdependence on the Internet

Write differences.

Modernisation and Globalisation

What is ferromagnetism?

Distinguish between crystalline solid and amorphous solid.

An element crystallizes in a f.c.c. lattice with a cell edge of 250 pm. Calculate the density if 300 g of this element contains 2 × 10²⁴ atoms. 

An element with molar mass 27 g mol⁻¹ forms a cubic unit cell with edge length 4.05 ✕ 10⁻⁸ cm. If its density is 2.7 g cm⁻³, what is the nature of the cubic unit cell?

Define the following term

Schottky defect

An element with density 2.8 g cm^–3 forms a f.c.c. unit cell with edge length 4 x 10^–8 cm. Calculate the molar mass of the element.

(Given : N_A = 6.022 x 10²³ mol ^–1)