Assume that light of wavelength 7000 is coming from a star. The limit of resolution (in radian) of a telescope whose objective has a diameter of 244 cm, will be

1.  2.5 x 10-7  

2.  5.0 x 10-7  

3.  3.5 x 10-7  

4.  4.5 x 10-7

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