Question

3. Source 0 reflector An isotopic light source emits a power of 400 W. A perfect reflector (total reflection) lies at distance R from it and is a circular disk that faces the source. The radius of that disk is 6.00 mm. The light pushes on the disk with a force of 2.40E-11 N. What is R(m)? Solution:

          3.
Source
0
reflector
An isotopic light source emits a power of 400 W.
A perfect reflector (total reflection) lies at distance
R from it and is a circular disk that faces the
source. The radius of that disk is 6.00 mm.
The light pushes on the disk with a force of 2.40E-11 N.
What is R(m)?
Solution:

3.
Source
0
reflector
An isotopic light source emits a power of 400 W.
A perfect reflector (total reflection) lies at distance
R from it and is a circular disk that faces the
source. The radius of that disk is 6.00 mm.
The light pushes on the disk with a force of 2.40E-11 N.
What is R(m)?
Solution:

Added by James J.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

09/01/2022

Step 1

Substitute the radius \( r = 4 \times 10^{-3} \) meters into the formula to get: \( A = \pi \times (4 \times 10^{-3})^2 = \pi \times 16 \times 10^{-6} = 16\pi \times 10^{-6} \) square meters. Show more…

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