The de-Broglie wavelength of an electron having \[80eV\] of energy is nearly (\[1\,eV=\text{ }1.6\times {{10}^{19}}J,\] Mass of electron \[=9\times {{10}^{-31}}kg\] Planks constant \[=6.6\times {{10}^{-34}}J\text{-}\,\sec \])

14 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]

140 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]

0.14 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]

1.4 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]

The de-Broglie wavelength of an electron having \[80eV\] of energy is

1.	The de-Broglie wavelength of an electron having \[80eV\] of energy is nearly (\[1\,eV=\text{ }1.6\times {{10}^{19}}J,\] Mass of electron \[=9\times {{10}^{-31}}kg\] Planks constant \[=6.6\times {{10}^{-34}}J\text{-}\,\sec \])
A.	140 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
B.	0.14 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
C.	14 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
D.	1.4 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]
Answer» C. 14 \[\overset{\text{o}}{\mathop{\text{A}}}\,\]