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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Calculate De Broglie's wavelength of the bullet moving with speed 90m/sec and having a mass of 5 gm.

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प्रश्न

Calculate De Broglie's wavelength of the bullet moving with speed 90m/sec and having a mass of 5 gm. 

बेरीज
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उत्तर

Given: v = 90 m/s, m = 5 g = 5 × 10-3 kg

To find: De Broglie wavelength (λ)

Formula: `lambda = "h"/"mv"`

Calculation:

λ = `(6.63 xx 10^-34)/((5 xx 10^-3) (90))`

= 0.0147 × 10-31

`= 1.47 xx 10^-33` m

De Broglie wavelength of given bullet is 1.473 × 10-33 m. 

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