Physics-
General
Easy
Question
Look at the ray diagram shown, what will be the focal length of the 1st and the 2nd lens, if the incident light ray passes without any deviation?
- –5cm and –10cm
- +5cm and +10cm
- –5cm and +5cm
- +5cm and +5cm
The correct answer is: –5cm and +5cm
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. The value of is given by :
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