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

Given the nuclear radius of ¹⁶O is 3.024 fm, find that of ²³⁵U.

State and prove the theorem of the parallel axis about the moment of inertia.

State the expressions for the displacement, velocity and acceleration draw performing linear SHM, starting from the positive extreme position. Hence, their graphs with respect to time.

The half-life of `""_82^210Pb` is 22.3 y. How long will it take for its activity 0 30% of the initial activity?

According to the kinetic theory of gases, at a given temperature, molecules of all gases have the same ______.

Define the coercivity of a magnetic material.

What is the radius of gyration of a right circular cone of base radius R for rotation about the central symmetry axis of the cone?

State the expression for the total energy of SHM in terms of acceleration.

Prove the theorem of perpendicular axes about the moment of inertia.

If a = 0. 72 and t = 0.04, then the value of r is ______.

Efficiency of transformer is the ratio of ______.

Calculate the de Broglie wavelength associated with an electron moving with a speed of `5 xx 10^6` m/s. `(m_e = 9.1 xx 10^(-31)kg)`

Derive an expression for the total emf induced in a conducting rotating rod.

At what temperature will therms velocity of a gas be four times its value at STP?

A magnetic flux associated with a coil changes by 0.04 Wb in 0.2 second. The induced emf with coil is ______.

If a = 0. 72 and r = 0.24, then the value of t is ______.

Draw the graph for variation of magnetic suceptibility (`chi`) of a material with temperature (T) and hence explain Curie temperature. 

Which of the following materials is diathermanous?

Which one of the following is not a characteristics of SHM?

A ray of light passes from air to glass. If the angle of incidence is 74° and the angle of refraction is 37°, find the refractive index of the glass.