f_(B) and f_(R) are focal lengths of a convex lens for blue and red light respectively and F_(B_ and Fr are the focal lengths of the concave lens for blue and red light respectively. We must then have

f_(B) and f_(R) are focal lengths of a convex lens for blue and red li

1.	f_(B) and f_(R) are focal lengths of a convex lens for blue and red light respectively and F_(B_ and Fr are the focal lengths of the concave lens for blue and red light respectively. We must then have
Answer» `f_(B)gtf_(R)` and `f_(B)ltf_(R)` `f_(B)ltf_(R)` and `f_(B)gtf_(R)` `f_(B)gtf_(R)` and `f_(B)gtf_(R)` `f_(B)ltf_(R)` and `f_(B)f_(R)` ANSWER :D

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f_(B) and f_(R) are focal lengths of a convex lens for blue and red light respectively and F_(B_ and Fr are the focal lengths of the concave lens for blue and red light respectively. We must then have

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