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

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?

Define linear S.H.M.

Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.

Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.

The co-efficient of mutual induction between primary and secondary coil is 2H. Calculate induced e.m.f. if current of 4A is cut off in 2.5 x 10^-4 seconds

Electric intensity due to a charged sphere at a point outside the sphere decreases with...................

In potentiometer experiment, if l₁ is the balancing length for e.m.f. of cell of internal resistance r and l₂ is the balancing length for its terminal potential difference when shunted with resistance R then :

What are the forced vibrations and resonance?

The instrument which can measure terminal potential difference as well as electromotive force (e.m. f.) is ______ 

1. Wheatstone’s meter bridge
2. Voltmeter
3. Potentiometer
4. Galvanometer

Which of the following substances is ductile?

Which of the following substances is ductile?

If the radius of a sphere is doubled without changing the charge on it, then electric flux originating from the sphere is ______.

State any ‘two’ possible sources of errors in meter-bridge experiment. How can they be minimised?