what is the power of lens? A student using a lens of focal length 40 cm. and another of _20 cm
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power of lens is inversely proportional to the focal length
student A.
power of lens is +2.5D
student B
power of lens is +5D
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student A.
power of lens is +2.5D
student B
power of lens is +5D
hope it help
please mark me brainlist
tonisingh1976pas7lw:
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