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JEE Photoelectric Effect and Wave–Particle Duality PYQs with Solutions

63 previous year questions from Photoelectric Effect and Wave–Particle Duality (JEE Main & Advanced Physics) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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About Photoelectric Effect and Wave–Particle Duality PYQs

Photoelectric Effect and Wave–Particle Duality has 63 previous year questions in the Quantrex Academy JEE Main & Advanced Physics bank. The 63 questions in this list come from Concepts Of Physics MCQ Edition [Volume 2] (63). Each question opens on its own page with the options, the correct answer and the worked solution where available.

JEE Photoelectric Effect and Wave–Particle Duality PYQs with Solutions

About Photoelectric Effect and Wave–Particle Duality PYQs

Photoelectric Effect and Wave–Particle Duality questions with solutions

Determine the net energy absorbed by an atom during a process in which it absorbs a photon of wavelength 500 nm and subsequently emits another photon of wavelength 700 nm .

Compute the number of photons emitted per second by a 10 W sodium vapour lamp. Assume that 60\% of the consumed energy is converted into light. The wavelength of sodium light is

Assuming the sun is directly overhead, the surface of the earth receives sunlight at 1.4 imes 10^3 W m^ -2 . Treat the light as monochromatic with an average wavelength of 500 nm

Assuming the sun is directly overhead, the surface of the earth receives sunlight at 1.4 × 10^3 W m^ -2 . Treat the light as monochromatic with an average wavelength of 500 nm

Assuming the sun is directly overhead, the surface of the earth receives sunlight at 1.4 × 10^3 W m^ -2 . Treat the light as monochromatic with an average wavelength of 500 nm

Determine the momentum of a light photon that has a wavelength of 500 nm .

Visible light encompasses wavelengths ranging from 400 nm to 780 nm . Determine the energy range of the photons of visible light.

A beam of white light strikes a plane surface normally. The surface absorbs 70\% of the light while reflecting the remainder. Determine the force exerted on the surface by the

A small, totally reflecting plane mirror is positioned horizontally to face a parallel beam of light, as shown in the figure. The mirror has a mass of 20 g . Assuming no

A 100 W light bulb is positioned at the centre of a spherical chamber having a radius of 20 cm . Assuming that 60\% of the energy supplied to the bulb is converted into light and

A sphere of radius 1.00 cm is positioned in the path of a parallel beam of light with a large aperture. The light has an intensity of 0.50 W cm^ -2 . Assuming the sphere

Why is it not possible for a photon to be completely absorbed by a free electron?

A sphere of radius 1.00 cm is positioned in the path of a parallel beam of light of large aperture. The intensity of the light is 0.50 W cm^ -2 . If the sphere is not perfectly

Determine the maximum kinetic energy of the photoelectrons emitted when light of wavelength 350 nm strikes a cesium surface. The work function of cesium is 1.9 eV .

Placed 1 m apart, two initially neutral particles undergo a process where charge is transferred from one particle to the other. Assuming the lost electric potential energy is

A metal has a work function of 2.5 × 10^ -19 J . Determine the threshold frequency for photoelectric emission.

A metal has a work function of 2.5 × 10^ -19 J . When the metal is illuminated by a light beam of frequency 6.0 × 10^ 14 Hz , what is the stopping potential?

A photoelectric material has a work function of 4.0 eV . Determine its threshold wavelength.

For a photoelectric material with a work function of 4.0 eV , calculate the wavelength of incident light that results in a stopping potential of 2.5 V .

A metal plate is illuminated by a monochromatic beam of light with a wavelength of 400 nm , and a negative potential of 1.1 V is required to halt the photocurrent. Determine the

In a photoelectric effect experiment, the stopping potential is measured for monochromatic light beams of varying wavelengths. The collected data is as follows: wavelength (nm)

A parallel beam of monochromatic light having a wavelength of 663 nm is incident on a totally reflecting plane mirror. The angle of incidence is 60^ ^ ^ ∘ , and 1.0 × 10^ 19

In a photoelectric effect experiment, the stopping potential is measured for monochromatic light beams of varying wavelengths. Find the threshold wavelength from the experimental

For a monochromatic beam, the associated electric field becomes zero 1.2 × 10^ 15 times per second. Determine the maximum kinetic energy of the photoelectrons emitted when this

A light wave has an associated electric field given by E = E_0 \! [(1.57 × 10^7 m^ -1 )(x - ct)] . Determine the stopping potential if this light is utilized in a photoelectric

The electric field associated with a light wave at a point is given by E = (100 Vm^ -1 ) \! [(3.0 × 10^ 15 s^ -1 ) t] \![(6.0 × 10^ 15 s^ -1 ) t] . When this light is incident on

Determine the maximum magnitude of the linear momentum of a photoelectron emitted when light of wavelength 400 nm is incident on a metal having a work function of 2.5 eV .

The figure displays the plot of the stopping potential versus the frequency of the light used in an experiment on the photoelectric effect. Determine the ratio h/e .

In a photoelectric effect experiment, the stopping potential is measured for monochromatic light beams of varying wavelengths. Determine the work function of the emitter from the

The plot of the stopping potential versus the frequency of the light used in an experiment on the photoelectric effect is a straight line. The stopping potential is 0 V at a

A photographic film is coated with a layer of silver bromide. When light strikes this film, the silver bromide molecules dissociate, and the film records the light. A minimum of

During an experiment on the photoelectric effect, light of wavelength 400 nm illuminates a cesium plate at a rate of 5.0 W . The potential of the collector plate is kept

In a photoelectric effect experiment, the emitter and collector plates are separated by 10 cm and connected via an ammeter without any cell (as shown in the figure). A magnetic

A silver ball of radius 4.8 cm is suspended by a thread within a vacuum chamber. Ultraviolet light having a wavelength of 200 nm strikes the ball for a duration such that a total

For the setup illustrated in the figure, y = 1.0 mm , d = 0.24 mm , and D = 1.2 m . The work function of the material of the emitter is 2.2 eV . Determine the stopping potential V

A monochromatic light source with an intensity of 5 mW emits 8 × 10^ 15 photons per second. This light ejects photoelectrons from a metal surface. The stopping potential for this

During a photoelectric experiment, the collector plate is maintained at 2.0 V relative to a copper emitter plate ( φ = 4.5 eV ). A monochromatic light source of wavelength 200 nm

A small piece of cesium metal ( φ = 1.9 eV ) is positioned 20 cm away from a large metal plate, which has a charge density of 1.0 × 10^ -9 C m^ -2 on the surface facing the

A small piece of cesium metal ( φ = 1.9 eV ) is positioned 20 cm away from a large metal plate. The surface of the plate facing the cesium piece carries a charge density of 1.0 ×

A horizontal cesium plate ( φ = 1.9 eV ) travels vertically downward with a steady speed v inside a room filled with radiation of wavelength 250 nm and greater. Determine the

A metal plate with a work function of 2.2 eV is illuminated by a light beam having a wavelength of 400 nm . A particular electron absorbs a photon and undergoes two collisions

A metal plate with a work function of 2.2 eV is illuminated by a light beam having a wavelength of 400 nm . A particular electron absorbs a photon. Assuming that 10\% of the extra

The dimensions of the Planck constant are identical to those of

Suppose p and E represent the linear momentum and energy of a photon, respectively. If the wavelength is reduced,

The equation E = pc holds true

Suppose n_r and n_b represent the number of photons emitted by a red bulb and a blue bulb respectively, both having equal power, during a given time interval. Which of the

When light of wavelength λ is incident on a metal with a work function of hc/λ_0 , the photoelectric effect will occur only if

A metal has a work function of hν_0 . If light of frequency ν is incident upon this metal, the photoelectric effect will occur only if

For two photons, which of the following is true?

During an experiment on the photoelectric effect, no photocurrent is detected when the stopping potential is applied. This indicates that

When the frequency of incident light in a photoelectric experiment is doubled, the stopping potential will

A point source of light is utilized in a photoelectric effect setup. If the source is moved farther from the emitting metal, the stopping potential

A point source induces the photoelectric effect on a small metal plate. Which of the curves shown could depict the saturation photocurrent as a function of the distance between

Suppose the frequency and intensity of a light source are both doubled. Evaluate the two statements below. (A) The saturation photocurrent remains nearly unchanged. (B) The

When nonmonochromatic light is utilized in a photoelectric effect experiment, the stopping potential

An electron and a proton are accelerated through an identical potential difference. Let λ_e and λ_p represent the de Broglie wavelengths of the electron and the proton

Upon increasing the intensity of a light source,

A photon of energy hν is absorbed by a free electron of a metal with a work function φ < hν .

In a photoelectric effect experiment, the photocurrent increases if

In an experiment on the photoelectric effect, if the wavelength of the incident light is doubled,

During a photoelectric effect experiment, the collector plate is maintained vertically above the emitter plate. A light source is turned on, and a saturation photocurrent is

The quantum nature of light is supported by the photoelectric effect because

For which of the following scenarios will the heavier of two particles have a shorter de Broglie wavelength? The two particles

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