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Ray Optics

Explain the phenomenon of total internal reflection. Derive the condition for total internal reflection in terms of the critical angle.

05/11/2024

Physics

12th (Science)

Alternating Current

Explain the concept of power in an AC circuit. Derive the expression for the power dissipated in a circuit containing only a resistor.

05/11/2024

Physics

12th (Science)

Electromagnetic Induction

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.

05/11/2024

Physics

12th (Science)

Magnetic Effects of Current

State Ampere’s circuital law and apply it to find the magnetic field inside a long, straight current-carrying conductor.

05/11/2024

Physics

12th (Science)

Current Electricity

Explain Kirchhoff’s laws of electric circuits and use them to derive the formula for equivalent resistance in a parallel circuit.

05/11/2024

Physics

12th (Science)

Electric Charges and Fields

Define electric dipole moment and derive the expression for the electric field along the axial line of an electric dipole.

05/11/2024

Physics

12th (Science)

Biotechnology and its Applications

Compare and contrast the advantages and disadvantages of production of genetically modified crops.

05/11/2024

Biology

12th (Science)

Biotechnology and its Applications

What are transgenic bacteria? Illustrate using any one example.

05/11/2024

Biology

12th (Science)

Biotechnology and its Applications

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.

05/11/2024

Biology

12th (Science)

Biotechnology and its Applications

Find out what the various components of the medium used for
propagation of an explant in vitro are?

05/11/2024

Biology

12th (Science)