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a. Figure (a) shows the optical axis o...

a. Figure (a) shows the optical axis of a lens, the point source of light A, and its virtual image `A^(')` . Trace the rays to find the position of the lens and of its focuses. What type of lens is it?

b. Solve the problem similar to the previous one using Figure.

Text Solution

Verified by Experts

The correct Answer is:
C
First draw a ray AA' until it intersects with the
principal optical axis and find the centre of the lens
C. Since, the virtual image is magnified, the lens is
convex.

Draw a ray AB parallel to the principal optical axis.
It is refracted by the lens so that it passes through its
focus and its continuation passes through the virtual
image. The ray A'B intersects the principal optical
axis at point F, the focus of the lens.
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DC PANDEY ENGLISH-REFRACTION OF LIGHT-Level 2 Subjective
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  12. The figure shows an arrangement of an equi-convex lens and a concave m...

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  13. A convex lens is held 45 cm above the bottom of an empty tank. The ima...

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  14. A parallel beam of light falls normally on the first face of a prism o...

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  15. Two converging lenses of the same focal length f are separated by a di...

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