Concept explainers
(a)
The focal length of Person S’s glasses.
(a)
Answer to Problem 58GP
Explanation of Solution
Given:
Power of lens,
Formula used:
It is known that focal length is the inverse of power. So,
Where,
Calculation:
Substituting the given values in the formula
(b)
Person S’s near point.
(b)
Answer to Problem 58GP
Explanation of Solution
Given:
Power of lens,
Distance from the source to lens,
Formula used:
It is known that the Lens maker’s equation
Where,
Calculation:
Distance is always positive. Take absolute value and add the
So,
Conclusion:
So, Person S’s near point is
(c)
Person P’s near point.
(c)
Answer to Problem 58GP
Explanation of Solution
Given:
Power of lens,
Distance from the source to lens,
Formula used:
It is known that the Lens maker's equation
Where,
Calculation:
Distance is always positive. Take absolute value and add the
So,
Conclusion:
So, Person S’s near point is
Chapter 25 Solutions
Physics: Principles with Applications
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