AP EAMCET202018 Sep 2020Evening ShiftChemistryStructure of AtomActual
The de-Broglie wavelength of a tennis ball of mass (60 ~g ) moving with a velocity of (10 ~ms ⁻¹ ) is approximately ____ (Planck's constant ( .h=6.63 10⁻³⁴ ~J . s ) )
Options
- A(1.1 10⁻³¹ ~m )
- B(1.1 10⁻³³ ~m )
- C(1.1 10⁻³⁴ ~m )
- D(1.1 10⁻³² ~m )
Correct answer
B. (1.1 10⁻³³ ~m )
Step-by-step solution
de-Broglie's wave equation is ( aligned & = h m v = 6.63 10⁻³⁴ (60 10⁻³ ) 10 =1.10 10⁻³³ ~m & [m= mass of the ball =60 ~g =60 10⁻³ ~kg , . & .v= velocity of the ball =10 ~ms ⁻¹ ] aligned )