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

Why wave motion is doubly periodic?

Find the amplitude of the resultant wave produced due to interference of two waves given as, y₁ = A₁ sin ωt, y₂ = A₂ sin (ωt + ϕ) 

When light travels from an optically rarer medium to an optically denser medium, the speed decreases because of change in ______ 

Light follows wave nature because ______ 

Young’s double-slit experiment is carried out using green, red and blue light, one colour at a time. The fringe widths recorded are W_G, W_R, and W_B respectively then ______ 

The path difference between two waves meeting at a point is (11/4)λ. The phase difference between the two waves is ______

Which of the following cannot produce two coherent sources?

What is the relation between phase difference and Optical path in terms of speed of light in a vacuum?

A Plane Wavefront of light of wavelength 5500 A.U. is incident on two slits in a screen perpendicular to the direction of light rays. If the total separation of 10 bright fringes on a screen 2 m away is 2 cm. Find the distance between the slits.

State any four conditions for obtaining well–defined and Steady interference patterns.

The work done in carrying a charge Q once round a circle of radius r with charge q at the centre of the circle is ______ 

The mean free path of electrons in a metal is 4 x 10^-8m. Find the electric field, in units of V/m, which can give on an average 2 eV energy to an electron in the metal.  

Obtain an expression for the electric field intensity at a point outside uniformly charged infinite plane sheet.

Obtain an expression for the capacitance of a parallel plate capacitor without a dielectric. 

When unknown resistance is determined by meter bridge, the error due to contact resistance is minimised by ______ 

Define: electrical circuit 

Define: Junction

A strong magnetic field is applied to a stationary electron. Then the electron ______ 

Which of the following is not a unit of magnetic induction?

What happens to the magnetic field at the centre of a circular current-carrying coil if we double the radius of the coil keeping the current unchanged?