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

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

(a) 30 seconds

(b) 1 minute

(c) 2 minute

(d) 10 seconds

The question was asked in class test.

Question is from Resolving Power of Grating in section Diffraction of Engineering Physics II

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The correct choice is (b) 1 minute

The explanation: 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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