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Q.

De Broglie wavelength of a particle of mass 10^-24 grams moving with a velocity 10³ m/s is 6.625 x 10^-x m. Value of ‘x’ is

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a

7

b

8

c

10

d

9

answer is D.

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Detailed Solution

$λ = \frac{h}{mv} = \frac{6.625 \times 10^{- 34} Kg . m^{2} / s}{(10^{- 24} \times 10^{- 3} Kg) (10^{3} m / s)} = 6.625 \times 10^{- 10} m;$

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De Broglie wavelength of a particle of mass 10-24 grams moving with a velocity 103 m/s is 6.625 x 10-x m. Value of ‘x’ is