Statement I When light travels from a rarer to a denser medium, the speed decreases but energy of the wave remains same. Statement II Intensity of light wave is directly proportional to the square of the amplitude of the wave.

Question

Statement I When light travels from a rarer to a denser medium, the speed decreases but energy of the wave remains same. Statement II Intensity of light wave is directly proportional to the square of the amplitude of the wave. (A) Both Statement I and Statement II are correct and Statement II is the correct explanation of statement I. (B) Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I. (C) Statement I is correct but Statement II is incorrect. (D) Statement I is incorrect but Statement II is correct.

Tardigrade Admin · Accepted Answer

μ=(c/v) Hence, the speed of light decreases in denser medium. Energy carried by a wave depends on the amplitude of the wave, not on the speed of wave propagation. Energy remains same. Also, intensity of wave propto( text amplitude )2 or I propto A2

Q. Statement I When light travels from a rarer to a denser medium, the speed decreases but energy of the wave remains same.
Statement II Intensity of light wave is directly proportional to the square of the amplitude of the wave.

Both Statement I and Statement II are correct and Statement II is the correct explanation of statement I.

Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I.

Statement I is correct but Statement II is incorrect.

Statement I is incorrect but Statement II is correct.

$μ = \frac{c}{v}$
Hence, the speed of light decreases in denser medium. Energy carried by a wave depends on the amplitude of the wave, not on the speed of wave propagation. Energy remains same.
Also, intensity of wave $\propto (amplitude)^{2}$ or $I \propto A^{2}$

Q. Statement I When light travels from a rarer to a denser medium, the speed decreases but energy of the wave remains same. Statement II Intensity of light wave is directly proportional to the square of the amplitude of the wave.