Practice Questions

Interference is a phenomenon in which two waves superimpose to form a resultant wave of greater of lower amplitude.There is no loss of energy during interference. It is simply redistributed.Interference is the phenomenon of superimposition of two or more waves having same frequency emitted by coherent sources such that amplitude of resultant wave is equal to the sum of the amplitude of the individual waves. The amplitude of resultant wave can either be larger or smaller than of individual waves depending on whether the interference is constructive or destructive.For interference to take place, the light emitting sources must be coherent i.e. the phase difference between the two sources must remain constant with time and the frequencies of emitted light must also be equal.

Interference of light can be explained with the help of

Ohm’s law states that the voltage across a conductor is directly proportional to the current flowing through it, represented by the formula V = IR
where V is the voltage across the conductor, I is the current flowing through the conductor and R is the resistance provided by the conductor to the flow of current.

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Interference of light can be explained with the help of

Which of the following relations represents the correct mathematical form of Ohm’s law?