Explain the phenomenon of total internal reflection. Derive the condition for total internal reflection in terms of the critical angle.
Explain the concept of power in an AC circuit. Derive the expression for the power dissipated in a circuit containing only a resistor.
Define mutual induction. Explain the concept and derive the expression for the induced emf in a coil due to a change in current in a neighboring coil.
State Ampere’s circuital law and apply it to find the magnetic field inside a long, straight current-carrying conductor.
Explain Kirchhoff’s laws of electric circuits and use them to derive the formula for equivalent resistance in a parallel circuit.
Define electric dipole moment and derive the expression for the electric field along the axial line of an electric dipole.
Compare and contrast the advantages and disadvantages of production of genetically modified crops.
Crystals of Bt toxin produced by some bacteria do not kill the bacteria
themselves because –
(a) bacteria are resistant to the toxin
(b) toxin is immature
(c) toxin is inactive
(d) bacteria encloses toxin in a special sac.
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