where should an object be placed in front of a convex lens of focal length 40cm.So as to obtain a real&inverted image magnified four times.
please answer it fast please.
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0
Answer:
mala mahit nahi aamhala ajun that topic not started
Answered by
1
Answer:
120cm
Explanation:
- m=1+(D/f)=4
- D/f=3
- D=3f
- D=120cm
please give me like
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