HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Physics

Two pure inductors each of self-inductance L are connected in series, the net inductance is ______  

State Lenz's Law.

A coil of self-inductance 3 H carries a steady current of 2 A. What is the energy stored in the magnetic field of the coil? 

Define self-inductance.

Obtain an expression for the self-inductance of a solenoid.

Explain the term capacitive reactance. State its unit and dimensions.

An alternating emf of 230V, 50Hz is connected across a pure ohmic resistance of 50Ω. Find (1) the current (2) equations for instantaneous values of current and voltage.

State any two special-purpose diodes.

State any two advantages and disadvantages of a photodiode. 

Define the dark current of the photodiode. What are the advantages and disadvantages of a photodiode?  

What is the reason for the Brownian motion?

The metre bridge works on the principle of ______.

When the bob performs a vertical circular motion and the string rotates in a vertical plane, the difference in the tension in the string at horizontal position and uppermost position is ______.

A liquid rises in glass capillary tube upto a height of 2.5 cm at room temperature. If another glass capillary tube having radius half that of the earlier tube is immersed in the same Liquid, the rise of liquid in it will be _______.

Define magnetization.

Define magnetization.

What is magnetic susceptibility?

What is magnetic susceptibility?

Define Inductive reactance.

Derive an expression for the pressure exerted by a gas on the basis of the kinetic theory of gases.