Back to ATOMS
JEE PHYSICS MCQ: ATOMS
1
Medium
1 of 1
Understanding
+4 | -1
Assertion (A): The positively charged nucleus of an atom has a radius of almost .
Reason (R): In - particle scattering experiment, the distance of closest approach for -particles is .
Reason (R): In - particle scattering experiment, the distance of closest approach for -particles is .
View answer and explanation
Correct option: A
Both (A) and (R) are true and (R) is the correct explanation of (A)
Option A is correct because the distance of closest approach in the alpha-particle scattering experiment provides an estimate of the nuclear radius.
More Questions from ATOMS
Practice All Chapter MCQs →
The de-Broglie wavelength of an electron in the first Bohr orbit is
The volume occupied by an atom is greater than the volume of the nucleus by a factor of about
For a hydrogen atom, when electron jump from to , then wave length of radiation emitted found to be . Then, for which transition of electron of a 'He' atom, the wavelength of radiation emitted will be equal to ' '.
Energy of characteristic X-ray is a consequence of
Taking Rydberg’s constant , first and second wavelength of Balmer series in hydrogen spectrum is
When hydrogen atom is in its first excited level, its radius is its ground state radius
