Question

1) Explain Reverberation. (2)

ii) Explain Total Internal Reflection. (2)

iii) State and explain Gauss’s law. (2)

iv) Explain Wheatstone bridge principle. (2)

v) Explain Peltier Effect. (2)

vi) Explain Bohr’s atomic model. (2)

vii) Explain LASER. (2)

viii) What is Dielectric Breakdown? (2)

ix) What is Diffraction of Light? (2)

x) Briefly explain the Principle of Superposition of Waves? (2)​

Answer 1

Answer:

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Answer 2

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Question :- Explain Reverberation.

Answer :- The definition of a reverberation is a reflection of light or sound waves, or a wide reaching impact of an action. An example of a reverberation is the sound bouncing around in a large speaker.

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Question :- Explain Total Internal Reflection.

Answer :- Total internal reflection, in physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.

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Question :- State and explain Gauss’s law.

Answer :- Gauss's law for electricity states that the electric flux across any closed surface is proportional to the net electric charge enclosed by the surface. The law implies that isolated electric charges exist and that like charges repel one another while unlike charges attract.

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Question :- Explain Wheatstone bridge principle.

Answer :- It works on the principle of null deflection, which means the ratio of their resistances are equal and hence no current flows through the circuit. Under normal conditions, the bridge will be in the unbalanced condition where current flows through the galvanometer.

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Question :- Explain Peltier Effect .

Answer :- Peltier effect, the cooling of one junction and the heating of the other when electric current is maintained in a circuit of material consisting of two dissimilar conductors ; the effect is even stronger in circuits containing dissimilar semiconductors.

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Question :- Explain Bohr’s atomic model .

Answer :- In atomic physics, the Bohr model or Rutherford–Bohr model, presented by Niels Bohr and Ernest Rutherford in 1913, is a system consisting of a small, dense nucleus surrounded by orbiting electrons—similar to the structure of the Solar System, but with attraction provided by electrostatic forces in place of gravity.

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Question :- Explain LASER.

Answer :- A laser is a device that emits a beam of coherent light through an optical amplification process. There are many types of lasers including gas lasers, fiber lasers, solid state lasers, dye lasers, diode lasers and excimer lasers.

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Question :- What is Dielectric Breakdown ? Answer :- Electrical breakdown or dielectric breakdown is a process that occurs when an electrical insulating material, subjected to a high enough voltage, suddenly becomes an electrical conductor and electric current flows through it.

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Question :- What is Diffraction of Light?

Answer :-Diffraction refers to various phenomena that occur when a wave encounters an obstacle or opening. It is defined as the bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.

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Question :- Briefly explain the Principle of Superposition of Waves?

Answer :-

• When two or more waves overlap, the resultant disturbance is equal to the algebraic sum of the individual disturbances, according to the superposition principle (individual waves).
• When two or more waves travel through the same medium at the same time, the superposition principle is used.

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