HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions for Physics

State the principle on  which transformer works.

What is electromagnetic induction?

What are eddy currents?

An alternative voltage given by V = 140 sin 314t is connected across a pure resistor of 50 Ω. Find

1. The frequency of the source.
2. The rms current is through the resistor.

What is the value of resistance for an ideal voltmeter?

Draw a neat labelled diagram of a schematic of the experimental setup for the photoelectric effect. 

Define Magnetic intensity.

State the principle on  which transformer works.

What is electromagnetic induction?

Write the functions of three segments of a transistor.

Draw a block diagram of generalized communication system.

Prove the theorem of parallel axes about moment of inertia

Write the necessary equation for maximum safety, speed and state the significance of each term involved in it.

Define moment of inertia. State its SI unit and dimensions.

The moment of inertia of a circular loop of radius R, at a distance of R/2 around a rotating axis parallel to horizontal diameter of the loop is ______

A flywheel is revolving with a constant angular velocity. A chip of its rim breaks and flies away. What will be the effect on its angular velocity?

The moment of inertia of a body about a given axis is 1.2 kgm². initially, the body is at rest. For what duration on the angular acceleration of 25 radian/sec² must be applied about that axis in order to produce rotational kinetic energy of 1500 joule?  

Derive an expression for the difference in tensions at the highest and lowest point for a particle performing the vertical circular motion. 

Derive an expression for critical velocity of a satellite revolving around the earth in a circular orbit.

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