CUET · PHYSICS · PYQ PAPER 2023
A Convex mirror produces the magnification \( \frac{1}{3} \) and \( \frac{1}{4} \) when the object is placed at the points P and Q in front of the mirror.
- A P is far from the mirror as compared to Q.
- B Q is far from the mirror as compared to P.
- C P and Q both are coinciding
- D Convex mirror produces the magnification always greater than 1.
Answer & Solution
Correct Answer
(B) Q is far from the mirror as compared to P.
Step-by-step Solution
Detailed explanation
\( m = \frac{f}{f+u} \implies u = f \left( \frac{1-m}{m} \right) \) \( u_P = f \left( \frac{1 - \frac{1}{3}}{\frac{1}{3}} \right) = 2f \) \( u_Q = f \left( \frac{1 - \frac{1}{4}}{\frac{1}{4}} \right) = 3f \) \( u_Q > u_P \) Q is far from the mirror as compared to P.
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