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

State Wein's displacement law

Draw a neat labelled diagram for Ferry's perfectly black body.

Show graphical representation of energy distribution spectrum of perfectly black body.

State any four assumptions of kinetic theory of gases.

A voltmeter has a resistance of 30 Ω. What will be its reading, when it is connected across a cell of emf 2 V having internal resistance 10 Ω?

On what factors do the degrees of freedom depend?

Draw a p-V diagram and explain the concept of positive and negative work. Give one example each.

Four resistances 6Ω, 6Ω, 6Ω and 18Ω form a Wheatstone bridge. Find the resistance which connected across the 18Ω resistance will balance the network.

Explain with a neat circuit diagram. How you will determine the unknown resistances using a meter bridge.

Which one of the following particles cannot be accelerated by a cyclotron?

(A) Electrons

(B) Protons

(C) Deuterons

(D) α- particles

Currents of equal magnitude pass through two long parallel wires having a separation of 1.35 cm. If the force per unit length on each of the wires is 4.76 x 10^-2 N, what must be I ?

A circular loop of radius 9.7 cm carries a current 2.3 A. Obtain the magnitude of the magnetic field
(a) at the centre of the loop
(b) at a distance of 9.7 cm from the centre of the loop but on the axis.

The magnetic field at a distance of 2.4 cm from a long straight [current-carrying] wire is 16 µT. What is the current through the wire?

Derive the expression for magnetic field produced by a current in a circular arc of wire.

Prove that the frequency of beats is equal to the difference between the frequencies of the two sound notes giving rise to beats.

Describe biprism experiment to calculate the wavelength of a monochormatic light. Draw the necessary ray diagram.

An iron rod of the area of cross-section 0.1m² is subjected to a magnetizing field of 1000 A/m. Calculate the magnetic permeability of the iron rod. [Magnetic susceptibility of iron = 59.9, magnetic permeability of vacuum = 4π x 10^-7 S. I. unit]  

Derive an expression for path difference in Young’s double slit experiment and obtain the conditions for constructive and destructive interference at a point on the screen.

Distinguish between the phenomenon of interference and diffraction of light.

Distinguish between diamagnetic and paramagnetic substances.