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

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

Find an expression for the power expended in pulling a conducting loop out of a magnetic field.

Two inductor coils with inductance 10 mH and 20 mH are connected in series. What is the resultant inductance of the combination of the two coils?

Eight droplets of water each of radius 0.2 mm coalesce into a single drop. Find the decrease in the surface area.

Define second’s pendulum.

Derive a formula for the length of second's pendulum.

Derive an expression for energy stored in the magnetic field in terms of induced current.

Find the work done when a drop of mercury of radius 2 mm breaks into 8 equal droplets. [Surface tension of mercury = 0.4855 J/m²].

What is the Van de Graaff generator?

State the Van de Graaff generator principle of working.

What is the temperature at which a blackbody radiates heat at the rate of 1 kilowatt per square metre?

The equation of motion in differential form for a seconds pendulum is ______.

A simple pendulum of length 196 cm performs linear SHM of amplitude 8 cm. Find the restoring force on its bob of mass 50 g at an extreme position.

Explain Planck's idea of the quantization of energy.

What is the peak wavelength of the radiation emitted by a blackbody at 35° C?

Calculate (i) the pressure due to the weight of the water at a depth of 2.5 m and (ii) the depth below the surface of water at which the pressure due to the weight of the water equals 1.0 atm.

A clock regulated by a second pendulum keeps the correct time. During winter the length of the pendulum decreases by 1 %. How much will the clock gain or lose in one day?

The surface tension of boiling water is ______.

A drop of water of radius 8 mm breaks into number of droplets each of radius 1 mm. How many droplets will be formed?

Define angle of contact.