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Grade 11Wave Optics

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.

Anubhab

9 Years agoGrade 11

1 Answer

Vikas TU

9 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

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