WorksheetsColor Perception and Light Interference Quiz
Total questions: 10
Worksheet time: 10mins
Color of an object is perceived due to:
Absorption of all wavelengths
Emission of light from the object
Reflection of certain wavelengths and absorption of others
Refraction of light
To see color, which of the following is essential?
Only heat
Only shadow
Light of different wavelengths
Absence of light
Thin film interference occurs when the film thickness is typically:
Greater than 1 mm
Less than 1 mm but greater than 100 µm
Less than 10⁻⁵ m (≈ 10 µm)
Any thickness
In wedge-shaped thin film interference, the alternate dark and bright fringes are formed due to:
Diffraction of light
Interference of reflected rays
Refraction only
Scattering of light
The angle of a wedge in thin film interference is usually measured in:
Degrees
Radians
Minutes
Seconds
You see colorful patterns on a soap bubble under sunlight. These colors are produced due to:
Diffraction of light through the bubble
Interference of light reflected from the inner and outer surfaces of the soap film
Scattering of sunlight
Absorption of specific wavelengths
While driving, you notice rainbow-like colors on a wet road surface. This is mainly caused by:
Polarization of light
Interference of light in thin oil films on water
Diffraction from the rough road
Reflection from wet asphalt
Thin-film interference is deliberately used in holographic stickers on banknotes and credit cards because:
It makes the sticker waterproof
It produces colorful patterns that are hard to replicate, increasing security
It strengthens the material
It absorbs infrared radiation
Two processes involved in seeing colors are:
Diffraction and refraction
Absorption and transmission
Reflection and interference of light
Scattering and absorption
When light reflects from a denser medium, an additional path difference introduced is:
None
𝜆/4
𝜆/2
𝜆
