HSC Science (Electronics) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Physics

A stretched string 0.7 m long and fixed at its ends vibrates in the second overtone of frequency 300 Hz. Find the speed of the transverse wave on the string.

When two kilocalories of heat are supplied to a system, the internal energy of the system increases by 5030 J and the work done by the gas against the external pressure is 3350 J. Calculate J, the mechanical equivalent of heat.

Explain the thermodynamic process.

Which magnetic properties are desirable for making a permanent magnet?

Define moment of inertia.

A sonometer wire under a tension of 40 N vibrates in unison with a tuning fork of frequency 384 Hz. Find the beat frequency when the tension in the wire is reduced by 0.21 N.

How does the fundamental frequency of a vibrating string depend on the radius of the cross-section of the string and the mass density material of the string?  

Two organ pipes closed at one end have the same diameters but different lengths. Show that the end correction at each end is e = `(n_1l_1 - n_2l_2)/(n_2 - n_1)`, where the symbols have their usual meanings. Take `γ = 5/3`.

Two wires, each 1 m long and of the same diameter, have densities 8 × 10³ kg/m³ and 2 × 10³ kg/m³ and are stretched by tensions 196 N and 49 N respectively. Compare their fundamental frequencies.

Prove that for pipe closed at one end, the end correction is `e = (n_2l_2-n_1l_1)/(n_1-n_2)`

The graph between instantaneous velocity and displacement of a particle performing SHM is ______.

Define angular momentum.

A sonometer wire is subjected to a certain tension. If the tension is increased four times and the length of wire is reduced to half the original value, how is frequency of vibrations altered?

When an inflated ballon is suddenly burst, why is the emerging air slightly cooled?

One beat means that the intensity of sound should be ______.

Calculate the change in angular momentum of the electron when it jumps from third orbit to first orbit in hydrogen atom.
(Take h = 6.33 × 10⁻³⁴ Js)

Describe in brief the different ways of electron emission from a metal surface.

An ideal gas is taken through a cyclic process ABCDA as shown in figure. The net work done by the gas during the cycle is ______.

What do you mean by wave frequency associated?

What do you mean by Wave number associated?