HSC Science (Computer Science) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Physics

Distinguish between light-emitting diode and photo-diode.

Explain the term sphere of death.

Draw a neat labelled diagram to determine unknown resistance using a meter bridge.

Draw a neat labelled diagram of Kelvin's meter bridge circuit for the measurement of galvanometer resistance.

Why the ring jumps several metres in air in jumping ring experiment?

Find the radius of the wire of length 25m needed to prepare a coil of resistance 25Ω. (Resistivity of material of wire is 3.142 x 10^-7Ωm)

The speeds of a particle performing linear SHM are 8 units and 6 units at respective displacements of 6 cm and 8 cm. Find its period and amplitude.

Absorption of water by filter paper is due to ______.

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?