CBSE Class 12-science Answered
An object of size 4cm is held at the principle focus of a concave lens of f=10cm .explain with reaso
Asked by twinkly_sony | 28 Jun, 2009, 08:01: PM
Expert Answer
given: h = 4 cm; f = - 10 cm; u = - 10 cm
using (1 / f) = (1 / v) - (1 / u)
(1 / -10) = (1 / v) + (1 / - 10)
v = infinity
thus, the image will be formed at infinity.
Answered by | 07 Jul, 2009, 04:20: PM
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