Concept explainers
(a)
The average light intensity of the laser beam.
(a)
Answer to Problem 38P
The answer is
Explanation of Solution
Given info:
Power of laser light,
Diameter of the beam,
Radius of the beam,
Formula used:
Where,
Calculation:
Substitute the values in equation
(b)
The intensity of light bulb and its comparison to the average light intensity of the laser beam.
(b)
Answer to Problem 38P
The intensity is
The ratio is
Explanation of Solution
Given info:
Power,
Radius,
The average light intensity of the laser beam is
Formula used:
Where,
Calculation:
Substitute the values in equation
The laser beam is more intense by a factor of
Chapter 28 Solutions
Physics: Principles with Applications
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