Question

17.
Ratio of wavelengths of waves associated with
two moving particles A & B with kinetic energy
E & E, is 2 : 3 then E /E, is :
(1) 4:9 (2) 9:4 (3) 3:3 (4) 2:3​

Answer 1

Answer:-

From de-Broglie's equation:

λ=mvh​

⇒λ2=m2v2h2​

⇒mv2=mλ2h2​

∵KE(K)=21​mv2

∴KE(K)=21​mλ2h2​

⇒K2​K1​​=(λ1​λ2​​)2=(35​)2

∴K1​:K2​=25:9.

Hope it helps..!!

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Answer 2

Answer:

I. don't.know this answer