Q: The momentum of a proton is p. The corresponding wavelength is

\$\lambda =\dfrac{h}{mv}\$ \$=\dfrac{h}{p}\$

Q: Einstein’s photoelectric equation states that\$E_{k} = h v - W\$, In this equation \$E_k\$ refers to :

\$E_{k}=h\nu -\phi \$ (here \$\phi=W\$)here \$E_{k}\$ refers to the maximum kinetic energy of emitted electrons.

Q: The wavelength of matter waves does not depend on

Wavelength of matter,\$\lambda =\dfrac{h}{mv}\$

Q: De-Broglie wavelength depends on

\$\lambda =\dfrac{h}{mv}\$So \$\lambda \$ depends on mass of the particle.

Q: Threshold wavelength depends on

\$\phi =\dfrac{hc}{\lambda }\$\$h\$ and \$c\$ are constants.\$\therefore \phi\$ depends only on \$\lambda \$.

Q: The Einstein’s photo-electric equation is based upon the conservation of

Einsteins photoelectric equations states that\$E_{k}=h\nu - \phi \$where, \$E_{k}\$ is maximum kinetic energy of emitted photoelectronsh is plank's constant.\$\nu \$ is frequency of incident light\$\phi \$ is work function of metal.So, it is clearly based upon energy conservation.

Question 1

The momentum of a proton is p. The corresponding wavelength is

Accepted Answer

$\lambda =\dfrac{h}{mv}$   $=\dfrac{h}{p}$

Question 2

The work function of a metal

Accepted Answer

Correct Answer: Option (A)The explanation for the correct answer:Work function is defined as the minimum amount of energy required to remove an electron to infinity from the surface of a given solid or metal. Different metals have different work functions due to their difference of strength of bond with electrons.Hence, the work function of a metal is different for different metals.

Question 3

The process of photoelectric emission depends on

Accepted Answer

Photo electric effect happens only if energy of electrons is greater than threshold energy, i.e the  work function.Work function depends on material.$\therefore $ photo electric emission on depends. on nature of surface.

Question 4

Einstein&#8217;s photoelectric equation states that$E_{k} = h v - W$, In this equation $E_k$ refers to :

Accepted Answer

$E_{k}=h\nu  -\phi $ (here $\phi=W$)here $E_{k}$ refers to the maximum kinetic energy of emitted electrons.

Question 5

The wavelength of matter waves does not depend on

Accepted Answer

Wavelength of matter,$\lambda =\dfrac{h}{mv}$

Question 6

De-Broglie wavelength depends on

Accepted Answer

$\lambda =\dfrac{h}{mv}$So $\lambda $ depends on mass of the particle.

Question 7

Work function is the energy required

Accepted Answer

Work function refers to the minimum frequency of photons required to eject an electron from its surface. $\phi =h{ \upsilon  }_{ o }$

Question 8

Threshold wavelength depends on

Accepted Answer

$\phi =\dfrac{hc}{\lambda }$$h$ and $c$ are constants.$\therefore \phi$ depends only on $\lambda $.

Question 9

If Planck&#8217;s constant is denoted by h and electronic charge by e, then photoelectric effect allows determination of:

Accepted Answer

In photoelectric effect we can know only the stopping potential.Stopping potential $=(\dfrac{hc}{\lambda }-\phi )/e$                                $=\dfrac{hc}{e\lambda }-\phi /e$So, we can determine only $h/e$ because we know stopping potential, frequency and work function of the metal.

Question 10

The Einstein&#8217;s photo-electric equation is based upon the conservation of

Accepted Answer

Einsteins photoelectric equations states that$E_{k}=h\nu - \phi $where, $E_{k}$ is maximum kinetic energy of emitted photoelectronsh is plank's constant.$\nu $ is frequency of incident light$\phi $ is work function of metal.So, it is clearly based upon energy conservation.

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The momentum of a proton is p. The corresponding wavelength is

The work function of a metal

The process of photoelectric emission depends on

Einstein’s photoelectric equation states that
$E_{k} = h v - W$ , In this equation $E_{k}$ refers to :

The wavelength of matter waves does not depend on

De-Broglie wavelength depends on

Work function is the energy required

Threshold wavelength depends on

If Planck’s constant is denoted by h and electronic charge by e, then photoelectric effect allows determination of:

The Einstein’s photo-electric equation is based upon the conservation of

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The momentum of a proton is p. The corresponding wavelength is

The work function of a metal

The process of photoelectric emission depends on

Einstein’s photoelectric equation states that Ek​=hv−W, In this equation Ek​ refers to :

The wavelength of matter waves does not depend on

De-Broglie wavelength depends on

Work function is the energy required

Threshold wavelength depends on

If Planck’s constant is denoted by h and electronic charge by e, then photoelectric effect allows determination of:

The Einstein’s photo-electric equation is based upon the conservation of

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Einstein’s photoelectric equation states that
$E_{k} = h v - W$ , In this equation $E_{k}$ refers to :