Hindi, asked by mishraabhishek80756, 6 months ago


(1) किसी आती हुई आपदा की भावना अथवा स्तम्भकारक
मनोविकार को कहते हैं।
(2) घनानंद किस रस के कवि माने जाते हैं?
(3) 'मेरे जीवन के कुछ चित्र' के लेखक हैं।
(4) "राम को रूप निहाति मानकी" में स्थायी भाव निहित है।
(5) यात्रियों के ठहरने का स्थान​

Answers

Answered by seemahadawale
0

Answer:

unable to answer

Explanation:

\huge {\underline{\pink{Given:-}}}

Given:−

Object distance , u = -60 cm

Image distance ,v = 30cm

\huge {\underline{\green{To Find:-}}}

ToFind:−

Focal length ,f

\huge {\underline{\blue{Solution:-}}}

Solution:−

Firstly we calculate the focal length of the lens.

By using lens formula

• 1/v -1/u = 1/f

where,

v is the image distance

u is the object distance

f is the focal length

Substitute the value we get

➺ 1/30 - 1/(-60) = 1/f

➺ 1/f = 1/30 + 1/60

➺ 1/f = 2+1 /60

➺ 1/f = 3/60

➺ 1/f = 1/20

➺ f = 20cm

Therefore, the focal length of the lens is 20 cm.

Now , we know that Power of lens is defined as the reciprocal of its focal length in metre.

• P = 1/f

Substitute the value we get

➺ P = 1/20/100

➺ P = 100/20

➺ P = 5 D

Therefore, the power of the lens is 5 Dioptre.

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