What is solid angle? - Heat Transfer

Q.  What is solid angle?
- Published on 11 Aug 15

a. the ratio of spherical surface enclosed by a cone, with its vertex at the centre of sphere, to the radius of the sphere
b. the ratio of spherical surface enclosed by a cone, with its vertex at the centre of sphere, to the square of the radius of the sphere
c. the ratio of spherical surface enclosed by a cone, with its vertex at the centre of sphere, to the cube of the radius of the sphere
d. the ratio of spherical surface enclosed by a cone, with its vertex at the centre of sphere, to the fourth power of the radius of the sphere

ANSWER: the ratio of spherical surface enclosed by a cone, with its vertex at the centre of sphere, to the square of the radius of the sphere

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