Question : Which phenomena show the particle nature of light?
Option 1: Diffraction
Option 2: Interference
Option 3: Photoelectric effect
Option 4: Polarisation
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Correct Answer: Photoelectric effect
Solution : The correct answer is the Photoelectric effect.
One phenomenon that was essential in proving that light is a particle is the photoelectric effect. Albert Einstein conducted the photoelectric effect, which showed that electrons are emitted from atoms when they absorb energy from radiation and light.
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Question : A mirage occurs because of:
Option 1: reflction by hot ground
Option 2: total internal reflection by layers of air
Option 3: interference of light
Option 4: diffraction of light
Question : The reverse effect of X-ray emission is
Option 1: Raman effect
Option 2: Compton effect
Option 3: Zeeman effect
Option 4: Photoelectric
Question : Optical fibres are based on the phenomenon of which of the following?
Option 1: Interference
Option 2: Dispersion
Option 3: Diffraction
Option 4: Total internal reflection
Question : A pond of water appears less deep due to:
Option 1: reflection
Option 2: diffraction
Option 3: refraction
Option 4: polarisation
Question : Which light is least effective in photosynthesis ?
Option 1: Blue light
Option 2: Green light
Option 3: Red light
Option 4: Sunlight
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