# Dual Nature of Radiation · Physics · MHT CET

Start Practice## MCQ (Single Correct Answer)

MHT CET 2023 14th May Evening Shift

When radiation of wavelength '$$\lambda$$' is incident on a metallic surface, the stopping potential is 4.8 V. If the surface is illuminated with radi...

MHT CET 2023 14th May Morning Shift

The de-Broglie wavelength $$(\lambda)$$ of a particle is related to its kinetic energy (E) as

MHT CET 2023 13th May Evening Shift

Dual nature of light is exhibited by

MHT CET 2023 13th May Evening Shift

When radiations of wavelength $$\lambda$$ is incident on a metallic surface the stopping potential required is $$4.8 \mathrm{~V}$$. If same surface is...

MHT CET 2023 13th May Morning Shift

When a light of wavelength $$300 \mathrm{~nm}$$ fall on a photoelectric emitter, photo electrons are emitted. For another emitter light of wavelength ...

MHT CET 2023 13th May Morning Shift

Light of frequency 1.5 times the threshold frequency is incident on photosensitive material. If the frequency is halved and intensity is doubled, the ...

MHT CET 2023 12th May Evening Shift

Graph shows the variation of de-Broglie wavelength $$(\lambda)$$ versus $$\frac{1}{\sqrt{V}}$$ where '$$V$$' is the accelerating potential for four pa...

MHT CET 2023 12th May Evening Shift

When an electron is accelerated through a potential '$$V$$', the de-Broglie wavelength associated with it is '$$4 \lambda$$'. When the accelerating po...

MHT CET 2023 12th May Morning Shift

Radiations of two photons having energies twice and five times the work function of metal are incident successively on metal surface. The ratio of the...

MHT CET 2023 12th May Morning Shift

When light of wavelength $$\lambda$$ is incident on a photosensitive surface the stopping potential is '$$\mathrm{V}$$'. When light of wavelength $$3 ...

MHT CET 2023 11th May Evening Shift

When a metallic surface is illuminated with radiation of wavelength '$$\lambda$$', the stopping potential is '$$\mathrm{V}$$'. If the same surface is ...

MHT CET 2023 11th May Evening Shift

A metal surface of work function $$1 \cdot 13 \mathrm{~eV}$$ is irradiated with light of wavelength $$310 \mathrm{~nm}$$. The retarding potential requ...

MHT CET 2023 11th May Morning Shift

The maximum kinetic energies of photoelectrons emitted are $$\mathrm{K}_1$$ and $$\mathrm{K}_2$$ when lights of wavelengths $$\lambda_1$$ and $$\lambd...

MHT CET 2023 10th May Evening Shift

If the potential difference used to accelerate electrons is doubled, by what factor does the de-Broglie wavelength associated with electrons change?...

MHT CET 2023 10th May Evening Shift

The maximum kinetic energy of the photoelectrons varies

MHT CET 2023 10th May Morning Shift

An electron accelerated through a potential difference '$$V_1$$' has a de-Broglie wavelength '$$\lambda$$'. When the potential is changed to '$$V_2$$'...

MHT CET 2023 10th May Morning Shift

Maximum kinetic energy of photon is '$$E$$' when wavelength of incident radiation is '$$\lambda$$'. If wavelength of incident radiations is reduced to...

MHT CET 2023 9th May Evening Shift

When photons of energies twice and thrice the work function of a metal are incident on the metal surface one after other, the maximum velocities of th...

MHT CET 2023 9th May Evening Shift

When a certain metal surface is illuminated with light of frequency $$v$$, the stopping potential for photoelectric current is $$\mathrm{V}_0$$. When ...

MHT CET 2023 9th May Morning Shift

From a metallic surface photoelectric emission is observed for frequencies $$v_1$$ and $$v_2\left(v_1 > v_2\right)$$ of the incident light. The maximu...

MHT CET 2022 11th August Evening Shift

If the kinetic energy of a free electron doubles, it's de Broglie wavelength ($$\lambda$$) changes by a factor

MHT CET 2021 24th September Evening Shift

A light of wavelength '$$\lambda$$' and intensity '$$\mathrm{I}$$' falls on photosensitive material. If '$$\mathrm{N}$$' photo electrons are emitted, ...

MHT CET 2021 24th September Evening Shift

In a photoelectric experiment, a graph of maximum kinetic energy $$(\mathrm{KE}_{\text {max }})$$ against the frequency of incident radiation (v) is p...

MHT CET 2021 24th September Morning Shift

A photon has wavelength $$3 \mathrm{~nm}$$, then its momentum and energy respectively will be $$[\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}, \mathrm{...

MHT CET 2021 24th September Morning Shift

In photoelectric experiment keeping the frequency of incident radiation and accelerating potential fixed, if the intensity of incident light is increa...

MHT CET 2021 23rd September Evening Shift

de-Broglie wavelength associated with an electron accelerated through a potential difference '$$\mathrm{V}$$' is '$$\lambda$$'. When the accelerating ...

MHT CET 2021 23rd September Evening Shift

In photoelectric effect, the photo current

MHT CET 2021 23rd September Evening Shift

According to de-Broglie hypothesis if an electron of mass '$$m$$' is accelerated by potential difference '$$V$$', the associated wavelength is '$$\lam...

MHT CET 2021 23th September Morning Shift

When wavelength of incident radiation on the metal surface is reduced from '$$\lambda_1$$' to '$$\lambda_2$$', the kinetic energy of emitted photoelec...

MHT CET 2021 23th September Morning Shift

An electron of mass '$$m$$' and a photon have same energy '$$E$$'. The ratio of de-Broglie wavelength of electron to the wavelength of photon is $$(\m...

MHT CET 2021 22th September Evening Shift

When a photon enters glass from air, which one of the following quantity does not change?

MHT CET 2021 22th September Evening Shift

The light of wavelength '$$\lambda$$' is incident on the surface of metal of work function $$\phi$$ and emits the electron. The maximum velocity of el...

MHT CET 2021 22th September Evening Shift

Photons of energy $$10 \mathrm{~eV}$$ are incident on a photosensitive surface of threshold frequency $$2 \times 10^{15} \mathrm{~Hz}$$. The kinetic e...

MHT CET 2021 22th September Morning Shift

When a light of wavelength '$$\lambda$$' falls on the emitter of a photocells, maximum speed of emitted photoelectrons is '$$\mathrm{V}$$'. If the inc...

MHT CET 2021 22th September Morning Shift

Kinetic energy of a proton is equal to energy '$$E$$' of a photon. Let '$$\lambda_1$$' be the de-Broglie wavelength of proton and '$$\lambda_2$$' is t...

MHT CET 2021 21th September Evening Shift

The wave number of the last line of the Balmer series in the hydrogen spectrum will be $$\left(\right.$$ Rydberg's cons $$\left.\tan t, R=\frac{10^7}{...

MHT CET 2021 21th September Evening Shift

Photoemission from metal surface takes place for frequencies '$$v_1$$' and '$$v_2$$' of incident rays $$\left(v_1>v_2\right)$$. Maximum kinetic energy...

MHT CET 2021 21th September Evening Shift

A proton and alpha particle are accelerated through the same potential difference. The ratio of the de-Broglie wavelength of proton to that of alpha p...

MHT CET 2021 21th September Morning Shift

Light of frequency two times the threshold frequency is incident on photosensitive material. If the incident frequency is made $$\left(\frac{1}{3}\rig...

MHT CET 2021 21th September Morning Shift

On a photosensitive surface, if the intensity of incident radiation is increased, the stopping potential

MHT CET 2021 20th September Evening Shift

What is the additional energy that should be supplied to a moving electron to reduce its de Broglie wavelength from $$1 \mathrm{~nm}$$ to $$0.5 \mathr...

MHT CET 2021 20th September Evening Shift

Photoelectrons are emitted when photons of energy $$4.2 ~\mathrm{eV}$$ are incident on a photosensitive metallic sphere of radius $$10 \mathrm{~cm}$$ ...

MHT CET 2021 20th September Morning Shift

When light of wavelength '$$\lambda$$' is incident on a photosensitive surface, photons of power 'P' are emitted. The number of photon 'n' emitted in ...

MHT CET 2021 20th September Morning Shift

When a photosensitive surface is irradiated by light of wavelengths '$$\lambda_1$$' and '$$\lambda_2$$', kinetic energies of emitted photoelectrons ar...

MHT CET 2020 19th October Evening Shift

The graph of stopping potential $V_s$ against frequency $v$ of incident radiation is plotted for two different metals $P$ and $Q$ as shown in the grap...

MHT CET 2020 19th October Evening Shift

If the maximum kinetic energy of emitted electrons in photoelectric effect is $3.2 \times 10^{-19} \mathrm{~J}$ and the work-function for metal is $6....

MHT CET 2020 16th October Evening Shift

The light of wavelength $$\lambda$$ incident on the surface of metal having work function $$\phi$$ emits the electrons. The maximum velocity of electr...

MHT CET 2020 16th October Evening Shift

The graph of kinetic energy against the frequency $$v$$ of incident light is as shown in the figure. The slope of the graph and intercept on $$X$$-axi...

MHT CET 2020 16th October Morning Shift

The maximum velocity of the photoelectron emitted by the metal surface is $$v$$. Charge and mass of the photoelectron is denoted by $$e$$ and $$m$$, r...

MHT CET 2020 16th October Morning Shift

Energy of the incident photon on the metal surface is $$3 W$$ and then $$5 W$$, where $$W$$ is the work function for that metal. The ratio of velociti...

MHT CET 2019 3rd May Morning Shift

The stopping potential of the photoelectrons, from a photo cell is

MHT CET 2019 3rd May Morning Shift

When certain metal surface is illuminated with a light of wavelength $\lambda$, the stopping potential is $V$, When the same surface is illuminated by...

MHT CET 2019 2nd May Evening Shift

A metal surface is illuminated by light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one fo...

MHT CET 2019 2nd May Morning Shift

When photons of energy $h v$ fall on a metal plate of work function ' $W_0$ ', photoelectrons of maximum kinetic energy ' $K$ ' are ejected. If the fr...

MHT CET 2019 2nd May Morning Shift

The maximum velocity of the photoelectron emitted by the metal surface is ' $v$ '. Charge and mass of the photoelectron is denoted by ' $e$ ' and ' $m...