In an attempt to verify if this law is obeyed by the light from a source the above setup was used. The light intensity I from the light bulb was recorded at various distance r and the observations are shown below. Ar = +0.001 m Al= ±0.1 w/m² r(m) 0.400 0.500 0.600 0.700 0.800 I(W/m²) 88.2 56.5 38.2 32.1 22.1 금(m-2) The theory indicates that the light intensity and the distance are related through the equation: P. Where P is the power emitted by the source. a) Complete the data table b) Plot the graph of I vs 1/r2 c) Determine the slope and the intercept of the graph d) Does the light intensity obey inverse square law? e) Find the power of the source from the slope and compare with the given value of 60 Watts.
In an attempt to verify if this law is obeyed by the light from a source the above setup was used. The light intensity I from the light bulb was recorded at various distance r and the observations are shown below. Ar = +0.001 m Al= ±0.1 w/m² r(m) 0.400 0.500 0.600 0.700 0.800 I(W/m²) 88.2 56.5 38.2 32.1 22.1 금(m-2) The theory indicates that the light intensity and the distance are related through the equation: P. Where P is the power emitted by the source. a) Complete the data table b) Plot the graph of I vs 1/r2 c) Determine the slope and the intercept of the graph d) Does the light intensity obey inverse square law? e) Find the power of the source from the slope and compare with the given value of 60 Watts.
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Transcribed Image Text:In an attempt to verify if this law is obeyed by the light from a source the above setup was used. The
light intensity I from the light bulb was recorded at various distance r and the observations are shown
below.
Ar = +0.001 m
Al= ±0.1 w/m²
r(m)
0.400
0.500
0.600
0.700
0.800
I(W/m²)
88.2
56.5
38.2
32.1
22.1
금(m-2)
The theory indicates that the light intensity and the distance are related through the equation:
P.
Where P is the power emitted by the source.
a) Complete the data table
b) Plot the graph of I vs 1/r2
c) Determine the slope and the intercept of the graph
d) Does the light intensity obey inverse square law?
e) Find the power of the source from the slope and compare with the given value of 60 Watts.
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