$A$ mirror of focal length $f$ is immersed in water $(\mu = 4/3)$. The focal length of the mirror in water will be ......
- A$f$
- B$\frac{4}{3} f$
- C$\frac{3}{4} f$
- D$\frac{7}{3} f$
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$A$ concave mirror has a focal length $20\,cm$. The distance between the two positions of the object for which the image size is double of the object size is......$cm$
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View SolutionAn object is placed at a distance of $10 \, cm$ from a concave mirror of focal length $20 \, cm$. The image formed will be .......
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View SolutionAn object is placed in front of a spherical concave mirror between the focal point $(F)$ and the center of curvature $(C)$. Its image is:
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View Solution$A$ point object is placed at a distance of $30 \, cm$ from a convex mirror of focal length $30 \, cm$. Where will the image be formed?
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