Back to ELECTROMAGNETIC WAVES
JEE PHYSICS MCQ: ELECTROMAGNETIC WAVES
1
Medium
1 of 1
Application
+4 | -1
The eye can detect photons per square metre per sec of green light while the ear can detect . The factor by which the eye is more sensitive as a power detector than the ear is close to
View answer and explanation
Correct option: A
5
The correct answer is A (5) because the eye is approximately 5 times more sensitive than the ear as a power detector, based on the calculated minimum intensity detectable by the eye compared to the ear.
More Questions from ELECTROMAGNETIC WAVES
Practice All Chapter MCQs →
Statement I: Sound waves are not electromagnetic waves.
Statement II: Sound waves require a material medium for propagation. For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric field and magnetic field respectively? Assertion: The relative velocity of two photons travelling in opposite directions is the velocity of light.
Reason: The rest mass of photon is zero Intensity of electromagnetic wave will be The rms value of the electric field of the light coming from the Sun is . The average total energy density of the electromagnetic wave is Methane is a greenhouse gas because
Statement II: Sound waves require a material medium for propagation. For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric field and magnetic field respectively? Assertion: The relative velocity of two photons travelling in opposite directions is the velocity of light.
Reason: The rest mass of photon is zero Intensity of electromagnetic wave will be The rms value of the electric field of the light coming from the Sun is . The average total energy density of the electromagnetic wave is Methane is a greenhouse gas because