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The de-Broglie wavelength of a proton and an α - paiticle are equal. The ratio of their velocities is:
  • a)
    1 : 3
  • b)
    4 : 1
  • c)
    1 : 2
  • d)
    1 : 6
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The de-Broglie wavelength of a proton and an α - paiticle are eq...
Every particle of mass m moving with velocity v is associated with a wave of wavelength given as
 Planck's constant
The wavelength for proton

and the wavelength for He

Since,

⇒  
Since 2He4 has four nucleons so m = 4mP
Thus, (iii) 
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Most Upvoted Answer
The de-Broglie wavelength of a proton and an α - paiticle are eq...
Every particle of mass m moving with velocity v is associated with a wave of wavelength given as
 Planck's constant
The wavelength for proton

and the wavelength for He

Since,

⇒  
Since 2He4 has four nucleons so m = 4mP
Thus, (iii) 
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The de-Broglie wavelength of a proton and an α - paiticle are equal. The ratio of their velocities is:a)1 : 3b)4 : 1c)1 : 2d)1 : 6Correct answer is option 'B'. Can you explain this answer?
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