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A concave mirror mirror of focal length 20cm is cut into two parts from the middle and the two parts are moved perpendicularly by a distance 1 mm from the previous principal axis AB. Find the distance between the images formed by the two parts.

CA , 6 Years ago
Grade 12th pass
anser 2 Answers
Arun

Last Activity: 6 Years ago

Here central length will be same as before that is 20 cm = 0.2 m 
The question separation will be = 0.01 m 
At that point from the mirror equation 
1/v+1/u = 1/f 
? 1/v-100 = 5 
? 1/v = 105 
? v = 1/105 m 

Viajy

Last Activity: 6 Years ago

Both images moved 0.5mm away from the principal axis before separation of mirrors.so the distance between the two images is 1mm

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