Multiple Choice Questions: Each multiple choicequestion or incomplete statement

Question

Multiple Choice Questions: Each multiple choicequestion or incomplete statement has
one best answer -- determine the best answer and explain yourchoice by invoking the
appropriate concept, principle, and/or mathematicalrelation.


3. If the human eyeball is too short from front to back, this givesrise to a vision defect
that can be corrected by using

a) convex lens eyeglasses.
b) concave lens eyeglasses.
c) cylindrical lens eyeglasses.
d) contact lenses, but not ordinary lenses.
e) shaded eyeglasses (i.e., something that will cause the iris todilate more).

Explanation / Answer

   a) convex lens eyeglasses    Putting a convex lens of suitable focallength before eye will make rays more converging therbyfocussin them on shorter distance at the retina.

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