Problem: Two light bulbs are 2.0 m apart.From what distance can these light bulbs be marginally resolved by a small telescope with a 5.0 cm-diameter objective lens? Assume that the lens is limited only by diffraction and λ = 600 nm.

FREE Expert Solution

The angular resolution limit for two-point sources of light with equal intensity:

θ=1.22λD, where D is the aperture diameter and Δθ is in radians.

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Problem Details

Two light bulbs are 2.0 m apart.

From what distance can these light bulbs be marginally resolved by a small telescope with a 5.0 cm-diameter objective lens? Assume that the lens is limited only by diffraction and λ = 600 nm.

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