(2) Aniket from Std. X uses spectacles. The power of the lenses in his

1.	(2) Aniket from Std. X uses spectacles. The power of the lenses in his spectaclesis-0.5 D.Answer the following questions:(a) State the type of lenses used in his spectacles.(b) Name the defect of vision Aniket is suffering from(c) Find the focal length of the lenses used in his spectacles.
Answer» a. He used concave lens since power of lens is negativeb. he suffers from myopiac. Power of lens in dioptre = 1 / focal length in metres. Therefore, - 0.5 = 1 / f(m) Therefore, f(m) = 1 / - 0.5Therefore, f(m) = 2 m. Therefore, the focal length of the lenses used in Aniket’s spectacles is - 2 m. thankyou very much

(2) Aniket from Std. X uses spectacles. The power of the lenses in his spectaclesis-0.5 D.Answer the following questions:(a) State the type of lenses used in his spectacles.(b) Name the defect of vision Aniket is suffering from(c) Find the focal length of the lenses used in his spectacles.

Answer»

a. He used concave lens since power of lens is negativeb. he suffers from myopiac. Power of lens in dioptre = 1 / focal length in metres. Therefore, - 0.5 = 1 / f(m) Therefore, f(m) = 1 / - 0.5Therefore, f(m) = 2 m. Therefore, the focal length of the lenses used in Aniket’s spectacles is - 2 m.

thankyou very much

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(2) Aniket from Std. X uses spectacles. The power of the lenses in his spectaclesis-0.5 D.Answer the following questions:(a) State the type of lenses used in his spectacles.(b) Name the defect of vision Aniket is suffering from(c) Find the focal length of the lenses used in his spectacles.

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