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

Define linear S.H.M.

Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.

Distinguish between ‘paramagnetic’ and ‘ferromagnetic’ substances.

The co-efficient of mutual induction between primary and secondary coil is 2H. Calculate induced e.m.f. if current of 4A is cut off in 2.5 x 10^-4 seconds

What are the forced vibrations and resonance?

Which of the following substances is ductile?

Which of the following substances is ductile?

If the radius of a sphere is doubled without changing the charge on it, then electric flux originating from the sphere is ______.

Give any ‘two’ points of differences between diamagnetic and ferromagnetic substances.

Give any ‘two’ points of differences between diamagnetic and ferromagnetic substances.

An iron rod of the area of cross-section 0.1m² is subjected to a magnetizing field of 1000 A/m. Calculate the magnetic permeability of the iron rod. [Magnetic susceptibility of iron = 59.9, magnetic permeability of vacuum = 4π x 10^-7 S. I. unit]  

An iron rod of the area of cross-section 0.1m² is subjected to a magnetizing field of 1000 A/m. Calculate the magnetic permeability of the iron rod. [Magnetic susceptibility of iron = 59.9, magnetic permeability of vacuum = 4π x 10^-7 S. I. unit]  

With the help of a neat circuit diagram, explain the working of a photodiode. 

The maximum velocity of a particle performing linear S.H.M. is 0.16 m/s. If its maximum acceleration is 0.64 m/s², calculate its period.

Distinguish between forced vibrations and resonance.

Colour of light emitted by LED depends upon__________________ .

1. its forward bias
2. its reverse bias
3. the band gap of the material of semiconductor
4. its size

The susceptibility of magnesium at 200 K is 1.8 x 10^-5. At what temperature will the susceptibility decrease by 6 x 10^-6?

The susceptibility of magnesium at 200 K is 1.8 x 10^-5. At what temperature will the susceptibility decrease by 6 x 10^-6?

The number of degrees of freedom for a rigid diatomic molecule is.................

(a) 3

(b) 5

(c) 6

(d) 7

Two particles perform linear simple harmonic motion along the same path of length 2A and period T as shown in the graph below. The phase difference between them is ___________.