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

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.

Compute the shortest and the longest wavelength in the Lyman series of hydrogen atom.

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 ______.

Find the ratio of radius of 1^st Bohr orbit to that of 4^th Bohr orbit.

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

The radius of the first Bohr orbit in the hydrogen atom is 0.5315 Å. The radius of the second Bohr orbit in the hydrogen atom is ______.

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.

A particle executing SHM has velocities v₁ and v₂ when it is at distance x₁ and x₂ from the centre of the path. Show that the time period is given by `T=2pisqrt((x_2^2-x_1^2)/(v_1^2-v_2^2))`

On what factors does radius of gyration depend?