Question
Asked Nov 3, 2019
Rank the light intensity, from largest to smallest, at the point P in the figures.
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В
C
E
A
2 bulbs
3 bulbs
1 bulb
4 bulbs
2 bulbs
0.5m
1.0 m
1.0 m
1.5 m
2.0 m
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Rank the light intensity, from largest to smallest, at the point P in the figures. View Available Hint(s) Help Reset В C E A 2 bulbs 3 bulbs 1 bulb 4 bulbs 2 bulbs 0.5m 1.0 m 1.0 m 1.5 m 2.0 m

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check_circleExpert Solution
Step 1

Given,

Ifwe assume power of each bulb is P
Distance between point P and A is r.
Distance between point P and B is r,.
Distance between point P and C is r,
Distance between point P and D is r,
Distance between point P and E is r,
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Ifwe assume power of each bulb is P Distance between point P and A is r. Distance between point P and B is r,. Distance between point P and C is r, Distance between point P and D is r, Distance between point P and E is r,

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Step 2

Relation for intensity of light at distance d is given by,

Р
I =
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Р I =

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Step 3

Intensity for all the cases a...

Р
P
— Р
() (
2P
2P
=8P
(3) (о5
ЗР
Ic
ЗР
— ЗР
() ()
4P
4P
— Р
() (2)
2P
2P
0.89P
(2) (1.5)
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Р P — Р () ( 2P 2P =8P (3) (о5 ЗР Ic ЗР — ЗР () () 4P 4P — Р () (2) 2P 2P 0.89P (2) (1.5)

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