Question

Diamonds sparkle more than glass because they have:

• A. smaller critical angle than the glass
• B. larger critical angle than the glass
• C. critical angle plays no role
• D. none of these

Answer 1

The correct option is C

critical angle plays no role

The explanation for the correct answer

(c)critical angle plays no role

• Diamonds are designed in such a way that their angles are very sharp which leads to a number of refractive surfaces.
• The critical angle of a diamond is less because of which when a ray enters, it suffers a series of total internal reflections.
• The rays get trapped in it making it sparkle.

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The explanation for the incorrect answer

(a) smaller critical angle than the glass

The critical angle of a diamond is less than that of glass, but its sparkles because of the design in which they are cut.

(b)larger critical angle than the glass

The critical angle of glass is more than that of a diamond.

(d)None of these

The correct option is critical angle plays no role.

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Diamonds sparkle more than glass because of the design in which they are cut.