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

What can you infer if a uniform ring and a uniform disc have the same radius of gyration?

The self-inductance of a closely wound coil of 200 turns is 10 mH. Determine the value of magnetic flux through the cross-section of the coil when the current passing through the coil is 4 mA.

Show that the average energy per molecule is directly proportional to the absolute temperature ‘T’ of the gas.

2000 calories of radiant heat is incident on a body. If the body absorbs 550 calories of heat, find the coefficient of emmission of the body.

What is a transformer?

Phase difference between a node and an adjacent antinode in a stationary wave is ______.

Derive the equation for a transformer.

An aircraft of wing span of 60 m flies horizontally in earth’s magnetic field of  6 × 10⁻⁵ T at a speed of 500 m/s. Calculate the e.m.f. induced between the tips of the wings of the aircraft.

Two springs of force constants K₁ and K₂ (K₁> K₂) are stretched by same force. If W₁ and W₂ be the work done stretching the springs then......

For polyatomic molecules having 'f' vibrational modes, the ratio of two specific heats,Cp/Cv  is..........

A set of 48 tuning forks is arranged in a series of descending frequencies such that each fork gives 4 beats per second with preceding one. The frequency of first fork is 1.5 times the frequency of the last fork, find the frequency of the first and 42^nd tuning fork

The combined resistance of a galvanometer of resistance 500Ω and its shunt is 21Ω. Calculate the value of shunt.

The combined resistance of a galvanometer of resistance 500Ω and its shunt is 21Ω. Calculate the value of shunt.

The graph between applied force and change in the length of wire within elastic limit is a

1. straight line with positive slope.
2. straight line with negative slope.
3. curve with positive slope.
4. curve with negative slope.

In circular motion, assuming `bar v = bar w xx bar r` , obtain an expression for the resultant acceleration of a particle in terms of tangential and radial component.

Explain why an astronaut in an orbiting satellite has a feeling of weightlessness.

State the theorem of perpendicular axes about moment of inertia.

Calculate the average molecular kinetic energy :

(a) per kilomole, (b) per kilogram, of oxygen at 27°C.

(R = 8320 J/k mole K, Avogadro's number = 6*03 x 10²⁶ molecules/K mole)

What are the forced vibrations and resonance?

Obtain an expression for potential energy of a particle performing simple harmonic motion. Hence evaluate the potential energy

1. at mean position and
2. at extreme position.