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Our eyes see two objects as separate, only in the angle subtended by them at the eye is greater than ______________

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Our eyes see two objects as separate, only in the angle subtended by them at the eye is greater than ______________

(a) 30 seconds

(b) 1 minute

(c) 2 minute

(d) 10 seconds

This question was posed to me in my homework.

Enquiry is from Resolving Power in portion Optics of Engineering Physics II

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The correct option is (b) 1 minute

To elaborate: Human eyes can see two objects as separate only when the angle subtended by them on the eye is greater than 1 minute. This is the minimum angle of resolution of a normal human eye. This process of observing two objects as separate is called resolution.

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