A spherical source of light with a diameter Dsource = 3.55 cm radiates light equally in all directions, with power P = 4.10 W. (a) Find the light intensity (in kW/m2) at the surface of the light source. |kW/m2 (b) Find the light intensity (in mW/m2) r = 7.10 m away from the center of the light source. mW/m2 (c) At this 7.10 m distance, a lens is set up with its axis pointing toward the light source. The lens has a circular face with a diameter of Dens = 16.0 cm and has a focal length of f = 34.0 cm. Find the diameter (in cm) of the light source's image. cm (d) Find the light intensity (in W/m2) at the image. W/m2
A spherical source of light with a diameter Dsource = 3.55 cm radiates light equally in all directions, with power P = 4.10 W. (a) Find the light intensity (in kW/m2) at the surface of the light source. |kW/m2 (b) Find the light intensity (in mW/m2) r = 7.10 m away from the center of the light source. mW/m2 (c) At this 7.10 m distance, a lens is set up with its axis pointing toward the light source. The lens has a circular face with a diameter of Dens = 16.0 cm and has a focal length of f = 34.0 cm. Find the diameter (in cm) of the light source's image. cm (d) Find the light intensity (in W/m2) at the image. W/m2
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![A spherical source of light with a diameter Deource = 3.55 cm radiates light equally in all directions, with power P = 4.10 W.
(a) Find the light intensity (in kW/m2) at the surface of the light source.
|kW/m²
(b) Find the light intensity (in mW/m2) r = 7.10 m away from the center of the light source.
mW/m2
(c) At this 7.10 m distance, a lens is set up with its axis pointing toward the light source. The lens has a circular face with a
diameter of Dlens
= 16.0 cm and has a focal length of f = 34.0 cm. Find the diameter (in cm) of the light source's image.
cm
(d) Find the light intensity (in W/m2) at the image.
|W/m2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47d7a0f8-4e66-40ed-ae66-faa7d8f664d3%2Ff1f76a89-d0fd-4fd4-9833-505bc4718083%2Ft68bp6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A spherical source of light with a diameter Deource = 3.55 cm radiates light equally in all directions, with power P = 4.10 W.
(a) Find the light intensity (in kW/m2) at the surface of the light source.
|kW/m²
(b) Find the light intensity (in mW/m2) r = 7.10 m away from the center of the light source.
mW/m2
(c) At this 7.10 m distance, a lens is set up with its axis pointing toward the light source. The lens has a circular face with a
diameter of Dlens
= 16.0 cm and has a focal length of f = 34.0 cm. Find the diameter (in cm) of the light source's image.
cm
(d) Find the light intensity (in W/m2) at the image.
|W/m2
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