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

Define coefficient of mutual induction. 

Explain the phenomenon of mutual induction.

Show that only odd harmonics are present in an air column vibrating in a pipe closed at one end.

A stretched wire emits a fundamental note of frequency 256 Hz. Keeping the stretching force constant and reducing the length of wire by 10 cm, the frequency becomes 320 Hz. Calculate the original length of wire.

A particle performing linear S.H.M. has the maximum velocity of 25 cm/s and maximum acceleration of 100 cm/ m². Find the amplitude and period of oscillation. (π = 3.142)

The momentum associated with the photon is given by_______.

(a) hv

(b) `"hv"/c`

(c) hE

(d) hλ

From differential equation of linear S.H.M., obtain an expression for acceleration, velocity and displacement of a particle performing S.H.M.

Which of the following statements is correct for diamagnetic materials?

Which of the following statements is correct for diamagnetic materials?

Choose the correct option:

A rectangular magnet suspended freely has a period of oscillation equal to T. Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely. Its period of oscillation is T′, the ratio of T′/T is ______.

Choose the correct option:

A rectangular magnet suspended freely has a period of oscillation equal to T. Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely. Its period of oscillation is T′, the ratio of T′/T is ______.

Choose the correct option:

A magnetising field of 360 Am⁻¹ produces a magnetic flux density (B) = 0.6T in a ferromagnetic material. What is its permeability in Tm A⁻¹?

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A magnetising field of 360 Am⁻¹ produces a magnetic flux density (B) = 0.6T in a ferromagnetic material. What is its permeability in Tm A⁻¹?

What happens to a ferromagnetic material when its temperature increases above curie temperature?

What happens to a ferromagnetic material when its temperature increases above curie temperature?

Answer in brief.

Discuss the Curie law for paramagnetic material.

Answer in brief.

Discuss the Curie law for paramagnetic material.

A paramagnetic gas has 2.0 × 10²⁶ atoms/m with atomic magnetic dipole moment of 1.5 × 10⁻²³ A m² each. The gas is at 27°C.

1. Find the maximum magnetization intensity of this sample.
2. If the gas in this problem is kept in a uniform magnetic field of 3 T, is it possible to achieve saturation magnetization? Why?

A paramagnetic gas has 2.0 × 10²⁶ atoms/m with atomic magnetic dipole moment of 1.5 × 10⁻²³ A m² each. The gas is at 27°C.

1. Find the maximum magnetization intensity of this sample.
2. If the gas in this problem is kept in a uniform magnetic field of 3 T, is it possible to achieve saturation magnetization? Why?

The susceptibility of a paramagnetic material is χ at 27° C. At what temperature its susceptibility be χ/3?