Spherical Aberration Can Be Corrected or Avoided in a Reflecting

question 211

Multiple Choice

Spherical aberration can be corrected or avoided in a reflecting telescope by

• A) grinding the mirror to a more accurate spherical curve.
• B) grinding the mirror to a parabolic shape.
• C) using light of only one color.
• D) grinding the mirror to an elliptical shape.

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Definitions:

Gamete

A mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.

Condom

A contraceptive device usually made of latex or polyurethane, worn on the penis or inserted into the vagina to prevent pregnancy and reduce the risk of sexually transmitted infections.

Orchidotomy

A surgical procedure involving the removal of one or both testicles.

Hydrocele

A fluid-filled sac around a testicle, often leading to swelling of the scrotum, usually painless and common in newborns.