Question
Download Solution PDFA needle of height 4 cm is placed at a distance of 45 cm in front of concave lens of focal length 30 cm. The height of the image of the needle will be:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 1.6cm.
Given:
Formula:
Lens formula:
Calculations:
Therefore,
Thus we have the height of needle is:
Therefore, the height of the image formed by the needle is 1.6cm.
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