Answer :
The correct answer is 2.21* 10^-38 m.
Car's speed, v = 25 ms-1,
Mass of car, m = 1200 Kg
h = 6.63 * 10^–34 Js, the Planck constant
De Broglie states that wavelength= h/p = h/mv = 6.63 *10^-34/(1200*25)=2.21*10^-38 m gives the wavelength associated with a particle of mass m travelling at a velocity v.The probability density of locating an object at a specific location in the configuration space is determined by the De Broglie wavelength, which is a wavelength that appears in all quantum mechanical objects. A particle's momentum is inversely related to its de Broglie wavelength. Only those atomic orbits are permitted as stationary orbits under the de Broglie quantum condition, where the diameter of the electron orbit is the integral multiple of the electron's associated de Broglie wavelength.
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