Concept explainers
(a)
The far point of the man without glasses.
(a)
Answer to Problem 75E
The far point of the man without glasses is
Explanation of Solution
Write the expression for the power of eye at near point.
Here,
Write the expression for the power of the eye at far point.
Here,
Write the expression for the power of the eye at far point.
Here,
Conclusion:
Substitute
Substitute
Substitute
Simplify the above expression.
Simplify the above expression for the far point.
Thus, the far point of the man without glasses is
(b)
The far point of the man with the correct glasses.
(b)
Answer to Problem 75E
The far point of the man with the correct glasses is
Explanation of Solution
Write the expression for the power of eye at near point with the glasses.
Here,
Write the expression for the power of lens in the glasses.
Write the expression for the far point.
Conclusion:
Substitute
Substitute
Substitute
Simplify the above expression.
Simplify the above expression for the far point as:
Thus, the far point of the man with the correct glasses is
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Chapter 24 Solutions
General Physics, 2nd Edition
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