02. Dual Nature of Electron
Structure of Atom

238731 Find the frequency of light that corresponds to photons of energy $5.0 \times 10^{-5} \mathrm{erg}$ ?

1 $7.5 \times 10^{-21} \mathrm{sec}^{-1}$
2 $7.5 \times 10^{-21} \mathrm{sec}$
3 $7.5 \times 10^{21} \mathrm{sec}^{-1}$
4 $7.5 \times 10^{21} \mathrm{sec}$
Structure of Atom

238733 The de Broglie wavelength associated with a ball of mass $1 \mathrm{~kg}$ having kinetic energy $0.5 \mathrm{~J}$ is :

1 $6.626 \times 10^{-34} \mathrm{~m}$
2 $13.20 \times 10^{-34} \mathrm{~m}$
3 $10.38 \times 10^{-21} \mathrm{~m}$
4 $6.626 \times 10^{-34} \AA$
Structure of Atom

238734 The de- Broglie wavelength of an electron in the ground state of hydrogen atoms is:
(K.E. $=13.6 \mathrm{eV} ; 1 \mathrm{ev}=1.602 \times 10^{-19} \mathrm{~J}$ )

1 $33.28 \mathrm{~nm}$
2 $3.328 \mathrm{~nm}$
3 $0.3328 \mathrm{~nm}$
4 $0.0332 \mathrm{~nm}$
Structure of Atom

238735 The de- Broglie wavelength associated with a particle of mass $10^{-6} \mathrm{Kg}$ moving with a velocity of $10 \mathrm{~ms}^{-1}$ is :

1 $6.63 \times 10^{-7} \mathrm{~m}$
2 $6.63 \times 10^{-16} \mathrm{~m}$
3 $6.63 \times 10^{-21} \mathrm{~m}$
4 $6.63 \times 10^{-29} \mathrm{~m}$
Structure of Atom

238731 Find the frequency of light that corresponds to photons of energy $5.0 \times 10^{-5} \mathrm{erg}$ ?

1 $7.5 \times 10^{-21} \mathrm{sec}^{-1}$
2 $7.5 \times 10^{-21} \mathrm{sec}$
3 $7.5 \times 10^{21} \mathrm{sec}^{-1}$
4 $7.5 \times 10^{21} \mathrm{sec}$
Structure of Atom

238733 The de Broglie wavelength associated with a ball of mass $1 \mathrm{~kg}$ having kinetic energy $0.5 \mathrm{~J}$ is :

1 $6.626 \times 10^{-34} \mathrm{~m}$
2 $13.20 \times 10^{-34} \mathrm{~m}$
3 $10.38 \times 10^{-21} \mathrm{~m}$
4 $6.626 \times 10^{-34} \AA$
Structure of Atom

238734 The de- Broglie wavelength of an electron in the ground state of hydrogen atoms is:
(K.E. $=13.6 \mathrm{eV} ; 1 \mathrm{ev}=1.602 \times 10^{-19} \mathrm{~J}$ )

1 $33.28 \mathrm{~nm}$
2 $3.328 \mathrm{~nm}$
3 $0.3328 \mathrm{~nm}$
4 $0.0332 \mathrm{~nm}$
Structure of Atom

238735 The de- Broglie wavelength associated with a particle of mass $10^{-6} \mathrm{Kg}$ moving with a velocity of $10 \mathrm{~ms}^{-1}$ is :

1 $6.63 \times 10^{-7} \mathrm{~m}$
2 $6.63 \times 10^{-16} \mathrm{~m}$
3 $6.63 \times 10^{-21} \mathrm{~m}$
4 $6.63 \times 10^{-29} \mathrm{~m}$
Structure of Atom

238731 Find the frequency of light that corresponds to photons of energy $5.0 \times 10^{-5} \mathrm{erg}$ ?

1 $7.5 \times 10^{-21} \mathrm{sec}^{-1}$
2 $7.5 \times 10^{-21} \mathrm{sec}$
3 $7.5 \times 10^{21} \mathrm{sec}^{-1}$
4 $7.5 \times 10^{21} \mathrm{sec}$
Structure of Atom

238733 The de Broglie wavelength associated with a ball of mass $1 \mathrm{~kg}$ having kinetic energy $0.5 \mathrm{~J}$ is :

1 $6.626 \times 10^{-34} \mathrm{~m}$
2 $13.20 \times 10^{-34} \mathrm{~m}$
3 $10.38 \times 10^{-21} \mathrm{~m}$
4 $6.626 \times 10^{-34} \AA$
Structure of Atom

238734 The de- Broglie wavelength of an electron in the ground state of hydrogen atoms is:
(K.E. $=13.6 \mathrm{eV} ; 1 \mathrm{ev}=1.602 \times 10^{-19} \mathrm{~J}$ )

1 $33.28 \mathrm{~nm}$
2 $3.328 \mathrm{~nm}$
3 $0.3328 \mathrm{~nm}$
4 $0.0332 \mathrm{~nm}$
Structure of Atom

238735 The de- Broglie wavelength associated with a particle of mass $10^{-6} \mathrm{Kg}$ moving with a velocity of $10 \mathrm{~ms}^{-1}$ is :

1 $6.63 \times 10^{-7} \mathrm{~m}$
2 $6.63 \times 10^{-16} \mathrm{~m}$
3 $6.63 \times 10^{-21} \mathrm{~m}$
4 $6.63 \times 10^{-29} \mathrm{~m}$
Structure of Atom

238731 Find the frequency of light that corresponds to photons of energy $5.0 \times 10^{-5} \mathrm{erg}$ ?

1 $7.5 \times 10^{-21} \mathrm{sec}^{-1}$
2 $7.5 \times 10^{-21} \mathrm{sec}$
3 $7.5 \times 10^{21} \mathrm{sec}^{-1}$
4 $7.5 \times 10^{21} \mathrm{sec}$
Structure of Atom

238733 The de Broglie wavelength associated with a ball of mass $1 \mathrm{~kg}$ having kinetic energy $0.5 \mathrm{~J}$ is :

1 $6.626 \times 10^{-34} \mathrm{~m}$
2 $13.20 \times 10^{-34} \mathrm{~m}$
3 $10.38 \times 10^{-21} \mathrm{~m}$
4 $6.626 \times 10^{-34} \AA$
Structure of Atom

238734 The de- Broglie wavelength of an electron in the ground state of hydrogen atoms is:
(K.E. $=13.6 \mathrm{eV} ; 1 \mathrm{ev}=1.602 \times 10^{-19} \mathrm{~J}$ )

1 $33.28 \mathrm{~nm}$
2 $3.328 \mathrm{~nm}$
3 $0.3328 \mathrm{~nm}$
4 $0.0332 \mathrm{~nm}$
Structure of Atom

238735 The de- Broglie wavelength associated with a particle of mass $10^{-6} \mathrm{Kg}$ moving with a velocity of $10 \mathrm{~ms}^{-1}$ is :

1 $6.63 \times 10^{-7} \mathrm{~m}$
2 $6.63 \times 10^{-16} \mathrm{~m}$
3 $6.63 \times 10^{-21} \mathrm{~m}$
4 $6.63 \times 10^{-29} \mathrm{~m}$