An Achromatic Lens

question 155

Multiple Choice

An achromatic lens

• A)is used to correct spherical aberration in reflecting telescopes.
• B)is used to correct chromatic aberration in refracting telescopes.
• C)is used to correct spherical aberration in refracting telescopes.
• D)is used to correct chromatic aberration in reflecting telescopes.
• E)contains two mirrors and focuses the light back through the primary mirror.

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Definitions:

Density

Density refers to the mass per unit volume of a substance, indicating how closely packed the particles are within the material.

Liquid

A state of matter characterized by a fixed volume but no fixed shape, allowing it to flow and take the shape of its container.

Density

Density is a measure of mass per unit of volume, often used to describe how compact or concentrated a substance is.

Volume

The amount of space an object or substance occupies, measured in cubic units.