Assume that light of wavelength 6000Å is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of 100 inches?

1. 1.2×10-6 radians2. 3.3×10-7 radians3. 1.7×10-6 radians4. 2.9×10-7 radians

 

Subtopic:  Resolving Power of Optical Devices |
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For what distance is ray optics a good approximation when the aperture is 3 mm wide and the wavelength is 500 nm?

1. 32 m

2. 42 m

3. 18 m

4. 20 m

Subtopic:  Resolving Power of Optical Devices |
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