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 : Which one of the following processes is responsible for the glittering of air bubbles rising through water?

Option 1: Reflection of light

Option 2: Refraction of light

Option 3: Total internal reflection of light

Option 4: Scattering of light

Question : Which phenomena show the particle nature of light?

Option 1: Diffraction

Option 2: Interference

Option 3: Photoelectric effect

Option 4: Polarisation

Question : Why does the water tank appear shallower when viewed from the top?

Option 1: Due to reflection

Option 2: Due to refraction

Option 3: Due to diffraction

Option 4: Due to 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