Calculate the potential at a point P due to charge of 5 x 10^-7Clocated 11cm away.

Two metallic wires P₁ & P₂ of the same material & same length but different cross sectional areas A₁ & A₂ are joined together & connected to a source of emf. Find the ratio of the drift velocities of free electrons in the two wires when they are connected
(i) in series &
(ii) in parallel.

A cyclotron's frequency is 8 μHz. What should be the operating magnetic field for accelerating protons? If the radius of its dees is 50cm. Calculate the k.E (is μeV) of the proton beam produced by the accelerator.

The magnetic flux through a coil perpendicular to the plane is given by Φ = 5t³ +4t² +2t calculate the induced emf through the coil at t = 2S

A plane Electromagnetic wave travels in vacuum along z - direction. What can you say about the directions of electric and magnetic field vectors? If the frequency of the wave is 30 MHz. What is its wavelength?

What is the focal length of a convex lens (μ = 1.5) with radii of curvature R.

Calculate the momentum of electrons if their wavelength is 2 Ă. Given: h = 6.626 x 10^-34 Is and m = 9.1 x 10^-31 kg.

Explain Chain reaction.

A Parallel beam of light of 500 nm falls on a narrow slit and be resulting diffraction pattern is observed on a screen 1m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Calculate the width of the slit.

What is RADAR? Explain its function. State its applications