🎥 Watch Video Solution
Q. If \( 10^{2y} = 25 \), find \( 10^{-y} \)
(a) \( -\frac{1}{5} \) (b) \( \frac{1}{50} \) (c) \( \frac{1}{625} \) (d) \( \frac{1}{5} \)
✏️ Solution
\( 10^{2y} = 25 \)
\( (10^y)^2 = 25 \)
\( 10^y = 5 \)
\( 10^{-y} = \frac{1}{10^y} \)
\( = \frac{1}{5} \)
Correct Option: (d) \( \frac{1}{5} \)
\( \boxed{\frac{1}{5}} \)