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

1000 calories of radiant heat are incident on a body. If the body absorbs 400 calories of heat, find the coefficient of emission of the body. 

The second law of thermodynamics deals with the transfer of ______.

Describe Young’s double-slit experiment with a neat diagram showing points of maximum and minimum intensity. 

In which of the following devices, the eddy current is not used ______ 

Why and where are eddy currents are undesirable? How are they minimized? 

A charged 10 microfarad capacitor is connected to an 81 mH inductor. What is the angular frequency of free oscillations of the circuit?  

A charged 10 microfarad capacitor is connected to an 81 mH inductor. What is the angular frequency of free oscillations of the circuit?  

A radio can tune over the frequency range of a portion of the MW broadcast band (800kHz -1200kHz). If its LC circuit has an effective inductance of 200mH, what must be the range of its variable condenser? 

A radio can tune over the frequency range of a portion of the MW broadcast band (800kHz -1200kHz). If its LC circuit has an effective inductance of 200mH, what must be the range of its variable condenser? 

What are eddy currents?

The kinetic energy and angular momentum of a body rotating with constant angular velocity are E and L. What does `(2E)/L` represent?

Which of the following would permit finer detail to be examined using a microscope of a given numerical aperture?

Determine the limit of resolution of a telescope for the light of wavelength 500 nm if the telescope objective has diameter of 5.08 m.

 An alternating emf is applied to a series combination of an inductor and a resistor (R = 100 Ω ). If the impedance of the circuit is `100 sqrt2  Ω`, what is the phase difference between the emf and the current?

Define the resolving power of a telescope.

State the formula for resolving the power of a telescope.

What are the advantages of using a large objective lens in an astronomical telescope?

The angular displacement of a particle in 6 sec on a circle with angular velocity `pi/3` rad/sec is ______.

When a sphere rolls without slipping, the ratio of its kinetic energy of translation to its total kinetic energy is ______.

What is absolute zero temperature?