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

Explain the output characteristics of common emitter configuration of n-p-n transistor.

A system releases 125 kJ of heat while 104 kJ work is done on the system. Calculate the change in internal energy.

What Types of wavefront?

Explain the Domain theory in brief.

Explain the Domain theory in brief.

Write a short note on Helical motion.

The moment of inertia (MI) of a disc of radius R and mass M about its central axis is ______.

Explain the change in internal energy of a thermodynamic system (the gas) by heating it.

Why a detergent powder is mixed with water to wash clothes?

The work done in bringing a unit positive charge from infinity to a given point against the direction of electric field is known as ______.

Define α.

Define β

Compare the rms speed of hydrogen molecules at 227°C with the rms speed of oxygen molecules at 127°C. Given that molecular masses of hydrogen and oxygen are 2 and 32 respectively.

Calculate the wavelength of the first two lines in the Balmer series of hydrogen atoms.

In U. C. M (Uniform Circular Motion), prove the relation `vec v = vec w xx vec r`, where symbols have their usual meanings.

A particle rotates in U.C.M. with tangential velocity V along a horizontal circle of diameter ‘D' . Total angular displacement of the particle in time 't' is..........

If sound waves are reflected from surface of denser medium, there is phase change of.......

The decay constant of radioactive substance is 4.33 x 10^-4 per year. Calculate its half life period.

State the principle on  which transformer works.

Explain the construction and working of the transformer.