1
JEE Main 2020 (Online) 5th September Morning Slot
Numerical
+4
-0
A particle of mass 200 MeV/c2 collides with a
hydrogen atom at rest. Soon after the collision
the particle comes to rest, and the atom
recoils and goes to its first excited state. The
initial kinetic energy of the particle (in eV) is
$${N \over 4}$$. The value of N is :
(Given the mass of the hydrogen atom to be 1 GeV/c2) ______ .
$${N \over 4}$$. The value of N is :
(Given the mass of the hydrogen atom to be 1 GeV/c2) ______ .
Your input ____
2
JEE Main 2020 (Online) 8th January Evening Slot
Numerical
+4
-0
The first member of the Balmer series of
hydrogen atom has a wavelength of 6561 Å.
The wavelength of the second member of the
Balmer series (in nm) is:
Your input ____
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