Physics - Wave Optics Question with Solution | TestHub

PhysicsWave OpticsThin film interferenceMedium2 minQB

PhysicsMediumsingle choice

Assertion : Thin film such as soap bubble or a thin layer of oil on water show beautiful colours when illuminated by monochromatic light.

Reason : Colour in film are obtained due to interference between reflected light from the upper and lower layer of film.

Answer:

Solution:

Thin films show colours in white light, not in monochromatic light.

So the Assertion is incorrect.

Colours arise from interference of light reflected from the upper and lower surfaces, so the Reason is correct.

Option (D)

Stream:JEESubject:PhysicsTopic:Wave OpticsSubtopic:Thin film interference

⏱ 2mℹ️ Source: QB

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