HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Physics

What is the resonance?

How the frequency of the vibrating wire is affected if the load is fully immersed in water? 

A sonometer wire of length 1 m is stretched by a weight of 10 kg. The fundamental frequency of vibration is 100 Hz. Determine the linear density of the material of the wire.

Waves produced by two vibrators in a medium have wavelength 2 m and 2.1 m respectively. When sounded together they produce 8 beats/second. Calculate wave velocity and frequencies of the vibrators.

State and verify the laws of vibrating strings using a sonometer. 

If an electron is brought towards another electron, the electric potential energy of the system ______.

Which physical quantity has its unit as J/C? Is it a scalar or vector?

Find the electric potential at the surface of an atomic nucleus (Z = 50) of radius 9 × 10^-13 cm.  

Three-point charges +q, +2q and Q are placed at the three vertices of an equilateral triangle. Find the value of charge Q (in terms of q), so that the electric potential energy of the system is zero. 

Obtain an expression for the potential energy of a dipole in an external field.

Derive an expression for the electric potential due to an electric dipole.

Four resistances 4 Ω, 8Ω, XΩ and 12Ω are connected in a series to form Wheatstone’s network. If the network is balanced, the value of X is ______.

In a meter bridge, two unknown resistances R and S, when connected between the two gaps, give a null point is 60 cm from one end. What is the ratio of R and S? 

Four resistances 6Ω, 6Ω, 6Ω and 18Ω form a Wheatstone bridge. Find the resistance which connected across the 18Ω resistance will balance the network.

Explain with a neat circuit diagram. How you will determine the unknown resistances using a meter bridge.

In a meter bridge, the balance point is found to be at 39.5 cm from the end A when the resistor R is 12.5 Ω (right gap).

a) Determine the resistance of X (left gap).

b) Determine the balance point of the bridge if X and R are interchanged?

c) What happens if the galvanometer and cell are interchanged at the balance point of the bridge?

What is the magnetization of a bar magnet having a length of 6 cm and the area of cross-section 5 cm²?

What is the magnetization of a bar magnet having a length of 6 cm and the area of cross-section 5 cm²?

A magnetic material of susceptibility 3 × 10⁻⁴, and magnetic intensity is 4 × 10⁻⁴ Am⁻¹. Then The magnetization in the units of Am⁻¹ is ______.

A magnetic material of susceptibility 3 × 10⁻⁴, and magnetic intensity is 4 × 10⁻⁴ Am⁻¹. Then The magnetization in the units of Am⁻¹ is ______.