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The power of lens is +2.0 D. (A) Find the focal length of lens in meters. (B) Name the kind of lens. Explain with the help of figure whether thirs lens would converge or diverge a beam of light |
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Answer» The FOCAL length of the lens = 0.5 mExplanation:The capability of lens to bend the light is termed as the POWER of lens. ALSO the greater the power the greater the refraction of light.The power of a lens is also defined as the INVERSE of the focal length.Mathematically,Power\ of\ a\ lens\ = \frac{1}{f}Power of a lens = f1 Where,f = focal length of the lens which is MEASURED in meters.Power of a lens is measured in Dioptres (D).Now from the question,Power of the lens = +2 D∴ Power\ of\ a\ lens\ = \frac{1}{f}Power of a lens = f1 2 = \frac{1}{f}2= f1 ⇒ f = 0.5 mExplanation:you solve queston |
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