A 6.61-mm-high firefly sits on the axis of, and 14.1 cm in front of, the thin...

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Physics

A 6.61-mm-high firefly sits on the axis of, and 14.1 cm in frontof, the thin lens A, whose focal length is 5.21 cm. Behind lens Athere is another thin lens, lens B, with focal length 21.1 cm. Thetwo lenses share a common axis and are 60.3 cm apart. Is the imageof the firefly that lens B forms real or virtual?

How far from lens B is this image located (expressed as apositive number)?

What is the height of this image (as a positive number)? Is thisimage upright or inverted with respect to the firefly?

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4.5 Ratings (777 Votes)
A image due to first lense A object distance u141 cm focal lemgth f1521 cm let image distance be v 1u1v1f1 11411v1521 v826cm this is the image due to first lense A    See Answer
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