Verified Solution • 2025–26 Session
moderate
QAIPMT-2007-Ph-2375: NEET 2007 Physics - Class 12 AIPMT-2007-Ph-2375 Solution: A nucleus \(_Z^A X\) has mass represented by M(A Z). If \(M_p\) …
A nucleus has mass represented by M(A Z). If and denote the mass of proton and neutron respectively and B.E. the binding energy in MeV then B.E. = B.E. = B.E. = B.E. =
Multiple Choice Options
- A 1/R 2
- B R 2
- C R
- D 1/R
Step-by-Step Verified Solution
In mass spectrometer, when ions are
accelerated through potential V,
1 2 m v 2 = q V ....(1)
As the magnetic field curves the path of the
ions in a semicircular orbit.
_ Bqv = m v 2 R
_ v = B q R m .....(2)
Now by substituting (ii) in (i),
1 2 m ( B q R m ) 2 = q
_ q m = 2 V B 2 R 2
As V and B are constants,
_ q m _ 1 R 2