Multiple Choice
Eyes: The near point of a farsighted person's uncorrected eyes is 80 cm. What power contact lens should be used to move the near point to 25 cm from this person's eyes?
A) 2.8 diopters
B) -2.8 diopters
C) -4.0 diopters
D) -4.2 diopters
E) 4.2 diopters
Correct Answer:

Verified
Correct Answer:
Verified
Q1: Spherical mirrors: A convex spherical mirror with
Q2: Camera: In a 35.0-mm single lens reflex
Q3: Lens-maker's formula: A thin double convex lens
Q5: Refracting telescope: A simple refracting telescope provides
Q6: Refracting telescope: An astronomical telescope has an
Q7: Thin lenses: When an object 1.15 cm
Q8: Compound microscope: The focal lengths of the
Q9: Thin lenses: Which statements are true about
Q10: Refracting telescope: The angular magnification of a
Q11: Refracting telescope: The objective lens of a