An α-particle of 7 MeV energy strikes with a nucleus of uranium at stationary at an scattering angle of 180o. The nearest distance upto which α-particle reaches the nucleus will be of the order of

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

1 Å

10-10 cm

10-12 cm

10-15 cm

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

At closest distance of approach Kinetic energy = Potential energy ⇒7×106×1.6×10−19=14πε0×(ze)(2e)rFor uranium z= 92, so r=5.3×10−12cm

Watch 3-min video & get full concept clarity