![Beams of light are incident through the holes A and B and emerge out of the box through the holes C and D respectively as shown in the Figure. Which of the Beams of light are incident through the holes A and B and emerge out of the box through the holes C and D respectively as shown in the Figure. Which of the](https://haygot.s3.amazonaws.com/questions/79890_9c53164165fa4f878b43f6cd7fb8ede3.png)
Beams of light are incident through the holes A and B and emerge out of the box through the holes C and D respectively as shown in the Figure. Which of the
![What is meant by power of a lens? Define its SI unit.You have two lenses A and B of focal lengths + 10 cm and - 10 cm, respectively. State the nature What is meant by power of a lens? Define its SI unit.You have two lenses A and B of focal lengths + 10 cm and - 10 cm, respectively. State the nature](https://haygot.s3.amazonaws.com/questions/1851296_494987_ans_982f0adfc651418ea035378bdfbe936e.jpg)
What is meant by power of a lens? Define its SI unit.You have two lenses A and B of focal lengths + 10 cm and - 10 cm, respectively. State the nature
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