Electromagnetic Induction — Physics STD 12 Science — Question

What are the factors which are considered for an electromagnet? Give an example.

An air bubble is formed inside water. Does it act as a converging lens or a diverging lens?

How does the angle of minimum deviation of a glass prism vary, if the incident violet light is replaced by red light? Give reason.

An arbitrary surface encloses a dipole. What is the electric flux through this surface?

Current I flow through two parallel straight wires in the same direction/The wires are at a distance 2r from each other. What is the intensity of magnetic field atw the midpoint between the two wires?

Consider a gas of neutrons. Do you expect it to behave much better as an ideal gas as compared to hydrogen gas at the same pressure and temperature?

Two capacitors of equal capacitance C are combine in series. What will be the capacitance of the combination?

The potential difference applied across a given resistance is altered so that heat produced per second increases by a factor of 16. By what factor does the applied pd change?

A copper cube of mass 200g slides down on a rough inclined plane of inclination 37° at a constant speed. Assume that any loss in mechanical energy goes into the copper block as thermal energy. Find the increase in the temperature of the block as it slides down through 60cm. Specific heat capacity of copper = 420Jkg^-1 K^-1.