In a Rutherford experiment, the number of particles scattered
at 90° angle are 28 per minute then number of scattered
particles at an angle 60° and 120° will be
(a) 117 per minute, 25 per minute
(b) 50 per minute, 12.5 per minute
(c) 100 per minute, 200 per minute
(d) 112 per minute, 12.4 per minute
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