Class 12

27. Ray Optics question bank (Physics)

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Q1.

An object of length \( 2.5 \, \text{cm} \) is placed at a distance of \( 1.5f \) from a concave mirror where \( f \) is the magnitude of the focal length of the mirror. The length of the object is perpendicular to the principal axis. The length of the image is  

(A)
\( 5 \, \text{cm}, \, \text{erect} \)
(B)
\( 10 \, \text{cm}, \, \text{erect} \)
(C)
\( 15 \, \text{cm}, \, \text{erect} \)
(D)
\( 5 \, \text{cm}, \, \text{inverted} \)
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Q2.

A convex mirror has a focal length \( f \). A real object is placed at a distance \( f \) in front of it from the pole. It produces an image at  

(A)
Infinity
(B)
\( f \)
(C)
\( \frac{f}{2} \)
(D)
\( 2f \)
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