HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

The energy stored in a 50 mH inductor carrying a current of 4 A is ______ 

The energy stored in a 50 mH inductor carrying a current of 4 A is ______ 

State the condition at which we say the two coils kept close to each other are perfectly coupled with each other. 

State the condition at which we say the two coils kept close to each other are perfectly coupled with each other. 

Using Ampere's law, obtain an expression for the magnetic induction near a current-carrying straight infinitely long wire. 

Using Ampere's law, obtain an expression for the magnetic induction near a current-carrying straight infinitely long wire. 

The work function of a metal is 4.2 eV. Its threshold wavelength will be ______.

Ultraviolet radiation of 6.2 eV falls on an aluminum surface (work function 4.2 eV). The kinetic energy in joules of the fastest electron emitted is ______ 

Define threshold frequency.

What is cut-off or stopping potential?  

What is mean by the dual nature of matter? 

Calculate the stopping potential when the metal with the work function 0.6 eV is illuminated with the light of 2 eV.

Two open organ pipes of lengths 49 cm and 50 cm sounded together beat at 7 per second. The speed of sound is ______.

Determine the motional emf induced in a straight conductor rotating in a uniform magnetic field with constant angular velocity about a transverse axis through one end.

A block of mass 40 grams is suspended from an ideal spring and set into vertical oscillations. Find the mass to be added on the spring such that the period of oscillation increases by 25%.

Define the sphere of influence.

Show that for a given positive ion species in a cyclotron, (i) the radius of their circular path inside a dee is directly proportional to their speed, and (ii) the maximum ion energy achievable is directly proportional to the square of the magnetic induction.

Show that for a given positive ion species in a cyclotron, (i) the radius of their circular path inside a dee is directly proportional to their speed, and (ii) the maximum ion energy achievable is directly proportional to the square of the magnetic induction.

Distinguish between an ideal gas and a real gas.

A circular loop has a resistance of 60 Ω. Two points on the loop, one-quarter of the circumference apart are connected to a 24 V battery, having an internal resistance of 0.75 Ω. The current through the battery is ______.