Question : A periscope works on the principle of:
Option 1: refraction
Option 2: total internal reflection
Option 3: diffraction
Option 4: reflection
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Correct Answer: reflection
Solution : The correct answer is reflection.
A periscope operates according to the law of reflection, which dictates that light from an object falls on one mirror at a 45° angle and is reflected. This reflected light then strikes another mirror and is reflected once again until it reaches the human eye. Light reflects when it bounces off an item.
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Question : A light ray travelling from denser to rarer medium at an angle of incidence more than the critical angle of the concerned media pair suffers:
Option 1: reflection
Option 2: refraction
Option 4: total internal reflection
Question : The splitting of white light into its components is due to:
Option 3: transmission
Option 4: dispersion
Question : The splitting of white light into its component colours is called ______.
Option 2: reflection
Option 3: scattering
Question : Rocket works on the principle of:
Option 1: Newton's third law
Option 2: Newton's first law
Option 3: Newton's second law
Option 4: Archimedes Principle
Question : Directions: Which one of the given responses will be a meaningful order of the following? 1. Key 2. Door 3. Lock 4. Room
Option 1: 4, 2, 1, 3
Option 2: 1, 2, 3, 4
Option 3: 1, 3, 2, 4
Option 4: 1, 2, 4, 3
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