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

A spring balance has a scale that reads from 0 to 50 kg. The length of the scale is 20 cm. A body suspended from this balance, when displaced and released osillates with a period of 0.6 sec. What is the weight of the body?

An iron rod is subjected to a magnetising field of 1200 Am^-1 .The susceptibility of iron is 599. Find the permeability and the magnetic field produced. 

An iron rod is subjected to a magnetising field of 1200 Am^-1 .The susceptibility of iron is 599. Find the permeability and the magnetic field produced. 

A conductor carrying a current I has three segments, as shown in figure. What is the magnetic field B at the centre of curvature C of the semicircle?

The velocities of five molecules are 2 m/s, 3 m/s, 4 m/s, 5 m/s and 6 m/s. Find the root mean square velocity of molecules.

What is meant by magnetic coupling coefficient?

What is Avalanche breakdown?

Four resistances 4Ω, 4Ω, 4Ω and 12Ω form a Wheatstone's network. Find the resistance which when connected across the 12Ω resistance will balance the network.

What do you know about restoring force?

A capillary tube of radius 1 mm is immersed in a beaker of mercury. The mercury level inside the tube is found to be 0.536 cm below the level in the reservoir. Determine the angle of contact between the mercury and glass. (Given: T = 0.485 N/m, p = 13.6 x 10³ kg/m³)

Assuming expressions for path difference between two light waves for bright bands and dark bands, obtain an expression for the band width.

What is a post office box? How is the· unknown resistance measured using a post office box?

In the given Wheatstone's network, what should be the value of R for the network to be balanced?

What is a Light Emitting Diode?

Draw Light Emitting Diode circuit symbol.

State SI unit of Magnetization.

State SI unit of Magnetization.

The displacement of a particle performing simple harmonic motion is `1/3` ^rd of its amplitude. What fraction of total energy will be its kinetic energy?

The current in a coil changes from 50A to 10A in 0.1 second. The self inductance of the coil is 20H. The induced e.m.f. in the coil is ______.

A particle performing linear S.H.M. has a period of 6.28 seconds and a pathlength of 20 cm. What is the velocity when its displacement is 6 cm from mean position?