A farsighted person cannot see clearly objects that are closer to her eyes than 60.0 cm.
Which one of the following combinations represents the correct focal length and the refractive power of the contact lenses that will enable her to comfortably see the objects at a distance of 25.0 cm from her eyes? A) -42.9 cm, +2.33 diopters
B) -42.9 cm, -2.33 diopters
C) +42.9 cm, +2.33 diopters
D) +42.9 cm, -2.33 diopters
E) +60 cm, +42.9 diopters
Question 2
Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?
A) The equivalent resistance is less than that of the smallest resistor.
B) The equivalent resistance is equal to the average of the four resistances.
C) The equivalent resistance is midway between the largest and smallest resistance.
D) The equivalent resistance is more than the largest resistance.
E) None of the other choices is correct.
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