Explanation Write the expression for minimum angular separation for a circular aperture. θ min = 1.22 λ D (I) Here, θ min is the minimum angular displacement resolvable with a circular path, λ is the wavelength, and D is the aperture diameter. Consider the opposite ends of the asteroid to be like the two peaks, then the angular size for small angle can be l / L . θ min = l L (II) Here, l is the minimum size of the asteroid, and L is the distance to the asteroid. Equate equation (I) and (II), and solve for l . l L = 1.22 λ D l = ( 1

4th Edition

ISBN: 9780134988566

Author: Wolfson, Richard

Publisher: Pearson Education,

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Definition Definition Angle at which a point rotates around a specific axis or center in a given direction. Angular displacement is a vector quantity and has both magnitude and direction. The angle built by an object from its rest point to endpoint created by rotational motion is known as angular displacement. Angular displacement is denoted by θ, and the S.I. unit of angular displacement is radian or rad.

Chapter 32, Problem 36E

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Minimum size of asteroid.

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