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Concave mirrors A and B each focal lengt...

Concave mirrors A and B each focal length - 15 cm. Concave mirror A has a larger aperture than B. Which of these will form a sharper image ? Why ?

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Aperture determines the amount of light received by the spherical mirror : A spherical mirror forms a sharp image, when its aperture is small when compared to its focal length. Therefore concave mirror B will form a sharper image.
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS) VSA
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