Question

The magnifying power of the objective lens of a compound microscope is $7$. If the magnifying power of the compound microscope is $35$, then the magnifying power of the eyepiece will be -

• A. $4$
• B. $5$
• C. $6$
• D. $7$

Answer 1

The correct option is B $5$

Given:

$m_o=7$
$m=35$

Magnifying power of a compound microscope is given by,

$m=m_o\times m_e$

$\Rightarrow m_e=\frac{m}{m_o}$

$\Rightarrow m_e=\frac{35}{7}$

$\Rightarrow m_e=5$

Hence, option $\left(B\right)$ is the correct answer.