Question

Figure shows a glowing mercury tube. The intensities at point $A,B$ and $C$ are related as

• A. $B>C>A$
• B. $A>C>B$
• C. $B=C>A$
• D. $B=C<A$

Answer 1

The correct option is D $B=C<A$

intensity at B and C will be equal as they are equidistant from source and it will be less than that of A as A is nearer
$B=C<A$
option $D$ is correct