State the basic processes involved in the generation of e.m.f. in a solar cell when light falls on it.

State the basci processes involved in the generation of e.m.f. in a solar cell when light falls on it.

State two properties of e.m wave.

State the advantages of solar cells.

An a.c. source of e.m.f. V_msinwt is connected with a circuit which contains an inductorL, a capacitor C and a resistor R in series. Establish the differential equation of e.m.f and find the total impedance of the series LCR circuit. What is quality factor of the circuit.

In a Young's double slit experiment distance between the slits is 1 mm. The fringe width is found to be 0.6 mm. When the screen is moved through a distance of 0.25 m away from the plane of the slit, the fringe width becomes 0.75 mm. Find the wavelength of light used.

The Marina trench is located in the Pacific Ocean, and at one place it is nearly eleven km beneath the surface of water. The water pressure at the bottom of the trench is about 1.1 xx 10^8 Pa. A steel ball of initial volume 0.32 m3 is dropped into the ocean and falls to the bottom of the trench. What is the change in the volume of the ball when it reaches to the bottom?

A 70 kg man stands in contact against the inner wail of a hollow cylindrical drum of radius 3 m rotating about its vertical axis with 200 rev/min. The coefficient of friction between the wall and his clothing is 0.15. What is the minimum rotational speed of the cylinder to enable the man to ' remain stuck to the wall (without falling) when the floor is suddenly removed?

Draw the circuit diagram for the comparison of e.m.f's of two cells by a potentiometer.

What is the emf of the cell when the cell reaction attains equilibrium.