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A lens is placed between a source of light and a wall. It forms images of area A1 and A2 on the wall for its two different positions. The area of the source of right is(a) √(A_1 A_2 )(b) (A_1+A_2)/2 (c)(A_1-A_2)/2 (d) 1/A_1 +1/A_2

Hrishant Goswami , 11 Years ago
Grade 10
anser 3 Answers
Navjyot Kalra

Last Activity: 11 Years ago

(a)
Size of images = A1 and A2. From the displacement method, the area of the source of light = √(A_1 A_2 ).

Shaurya Luthra

Last Activity: 7 Years ago

Can you please elaborate the above answer I am unable to understand. What is the displacement method , how can area be root o& A1A2
 
 

Priyamavi

Last Activity: 6 Years ago

What is displacement method plz explain it elaborate it. How this possible plz help me .I am totally mad in this question 
 

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