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Answer to Question #46570 in Other Physics for prromise ayansola

Question #46570
Which of the following is not true about diverging lens.

the principal focus is positive
the principal focus is negative
they produce virtual images only
they form virtual, erect and smaller images of real object
Expert's answer
I and II
The principal focus is always positive for all types of lenses, thus second answer is not true
III and IV
true. A diverging lens always produces a virtual,upright, reduced image, thus fours answer is not true
Answer: the principal focus is negative they form virtual, erect and smaller images of real object

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