Physics, asked by Momin007, 1 year ago

a Distance x separates two thin convex lenses of focal lengths f and 2f for what value of x a parallel beam of light fal4ng on this cobninatiom parallel to the common principal axis emerges out the combination as a parallel beam ?

Answers

Answered by rahul4378

0

Answer:

2ab is the answer of this question

Momin007: Please Can u explain me how it does be its answer??

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