Assertion (A) : The de - Broglie wavelength of a neutron when its kinetic energy is K is λ. Its wavelength is 2λ when its kinetic energy is 4K
Reason (R) : The de- Broglie wavelength λ is proportional to square root of the kinetic energy.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false and R is also false