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

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

Q: Moving with the same velocity, one of the following has the longest de Broglie wavelength

De-broglie wavelength\$\lambda =\dfrac{h}{mv}\$\$\lambda \propto \dfrac{1}{m}\$\$\beta\$ particle has least mass.So \$\beta\$ particle has the longest wavelength.

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: 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

Moving with the same velocity, one of the following has the longest de Broglie wavelength

Accepted Answer

De-broglie wavelength$\lambda =\dfrac{h}{mv}$$\lambda \propto \dfrac{1}{m}$$\beta$ particle has least mass.So $\beta$ particle has the longest wavelength.

Question 3

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 4

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 5

The best suitable metal for photoelectric effect is:

Accepted Answer

Photoelectric effect occurs easily if the metal has low ionization potential  cesium, the alkali metal has low ionization potential, hence it is best suitable for photoelectric effect.

Question 6

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 7

The wavelength of matter waves does not depend on

Accepted Answer

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

Question 8

De-Broglie wavelength depends on

Accepted Answer

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

Question 9

Matter waves are:

Accepted Answer

Correct Answer: option (D)Matter waves are waves associated with every moving particle and therefore are neither mechanical nor electromagnetic waves.These waves have $\lambda = h\times p$Where $\lambda$ is the wavelength, $h$ is plank's constant, and $p$ is the particle&#8217;s moment. Therefore, matter waves are neither mechanical nor electromagnetic waves.

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.

Dual Nature Of Radiation And Matter

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

Moving with the same velocity, one of the following has the longest de Broglie wavelength

The work function of a metal

The process of photoelectric emission depends on

The best suitable metal for photoelectric effect is:

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

Matter waves are:

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

Dual Nature Of Radiation And Matter

Physics 6166 Views

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

Moving with the same velocity, one of the following has the longest de Broglie wavelength

The work function of a metal

The process of photoelectric emission depends on

The best suitable metal for photoelectric effect is:

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

Matter waves are:

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

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6166 Views

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