Q.Calculate the solid angle suspended by an area of 500cm'at 2 m. Given that maximum solid angle = 4π steradian
A. 0.0157 steradian
B. 0.0125 steradian
C.0.157 steradian
D. 0.125 steradian
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Answer:
Given data,
Area=1cm
2
Distance=5cm
Solid angle Ω=?
We know the formula
Solid angle Ω=
(Radial distance)
2
Area
=
(5cm
2
)
1cm
2
=
25
1
=4×10
−2
steradian
The solid angle is for 3−D figure like spere, cone, etc and plane angle is for plane objects or 2−D figure like circle,arc etc.
Explanation:
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