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

Draw a neat labelled diagram of Polarization of light.

Draw a neat labelled diagram of Polarization by reflection.

Calculate the values of x and y in the following nuclear reaction.

\[\ce{^227_89Ac -> ^211_82Pb + x[^4_2He]+ y[^0_-1e]}\]

What is binding energy of nucleus?

In a cyclic process, if ΔU = internal energy, W = work done, Q = Heat supplied then ______.

Prove the Mayer's relation `C_p - C _v = R/J`

Derive an expression for critical velocity of a satellite revolving around the earth in a circular orbit.

A coin kept at a distance of 5cm from the centre of a turntable of radius 1.5m just begins to slip when the turntable rotates at a speed of 90 r.p.m. Calculate the coefficient of static friction between the coin and the turntable.

[g = 9.8 m/s²]

A sonometer wire vibrates with frequency n₁ in air under suitable load of specific gravity of . When the load is immersed in water, the frequency of vibration of wire n₂ will be .........

What is the decrease in weight of a body of mass 600kg when it is taken in a mine of depth 5000m?

[ Radius of earth = 6400km, g = 9.8 m/s² ]

Electric intensity due to a charged sphere at a point outside the sphere decreases with...................

The period of a conical pendulum in terms of its length (l), semi-vertical angle (θ) and acceleration due to gravity (g) is ______.

If the metal bob of a simple pendulum is replaced by a wooden bob of the same size, then its time period will.....................

1. increase
2. remain same
3. decrease
4. first increase and then decrease.

The numerical aperture of objective of a microscope is 0.12. The limit of resolution, when light of wavelength 6000A is used to view an object is.......................

1. 0.25 * 10^-7m
2. 2.5 * 10^-7m
3. 25 * 10^-7m
4. 250 * 10^-7m

What are α and β parameters for a transistor? Obtain a relation between them.

A stone of mass 100 g attached to a string of length 50 cm is whirled in a vertical circle by giving velocity at lowest point as 7 m/s. Find the velocity at the highest point. [Acceleration due to gravity = 9.8 m/s2 ]

Wavelengths of two notes in the air are`[70/153]^m` and `[70/157]^m`. Each of  these notes produces 8 beats per second with a tuning fork of fixed frequency. Find the velocity of sound in the air and frequency of the tuning fork.

A stone of mass 1 kg is whirled in horizontal circle attached at the end of a 1 m long string. If the string makes an angle of 30^º with vertical, calculate the centripetal force acting on the stone.(g=9.8m/s²).

Derive an expression for acceleration due to gravity at depth ‘d’ below the earth’s surface.

When the length of a simple pendulum is decreased by 20 cm, the period changes by 10%. Find the original length of the pendulum.