In a pvc pipe two concave lens of same focal length are joined together. A boy observes moon through this pipe. How will the image of the moon look to the boy?

Question

Vikas TU · Answer

We can calculate the effective focal length can be calculated using this formulae = F eff = f 1 f 2 (f 1 +f 2 –d) 1/ F eff = 1/ f 1 + 1/ f 2 – d/ f 1 f 2 Here f 1 and f 2 is negative and d is positive. f 1 = f 2 = -ve = -f Since d = 0 Then effective focal length will be = -f/2 Then using the lens formulae 1/f =1/v-1/u Then from this v =-f/2 Hence the image is virtual, erect and diminshed

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In a pvc pipe two concave lens of same focal length are joined together. A boy observes moon through this pipe. How will the image of the moon look to the boy?

In a pvc pipe two concave lens of same focal length are joined together. A boy observes moon through this pipe. How will the image of the moon look to the boy?

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In a pvc pipe two concave lens of same focal length are joined together. A boy observes moon through this pipe. How will the image of the moon look to the boy?

In a pvc pipe two concave lens of same focal length are joined together. A boy observes moon through this pipe. How will the image of the moon look to the boy?

1 Answers

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Other Related Questions on Wave Optics

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