NEET Physics Dual Nature of Matter & Radiation Class 12 Questions

In photoelectric effect, A. The photocurrent is proportional to the intensity of the incident radiation. B. Maximum Kinetic energy with which photoelectrons are emitted depends on the intensity of incident light. C. Max. K.E with which photoelectrons are emitted varies linearly with the frequency of incident light. D. The emission of photoelectrons require a minimum threshold intensity of incident radiation. E. Max. K.E of the photoelectrons is independent of the frequency of the incident light. F. For a frequency ν of incident radiation, lower than the cut-off frequency ν₀, no photoelectric emission is possible even if the intensity is large.

What is the threshold frequency in the context of the photoelectric effect?

What is the relationship between the stopping potential and the frequency of incident light in the photoelectric effect?

What is the cut-off frequency in the context of the photoelectric effect?

What was the significant discovery made by J. J. Thomson in 1897?

What is the minimum energy required for electron emission from the surface of a metal called?

What phenomenon can enable free electrons to come out of a metal surface through heating?

What is the de Broglie wavelength of a particle directly related to?

What is the de Broglie wavelength associated with a particle determined by?

What phenomenon was observed when certain metals were irradiated by ultraviolet light in 1887?

What was a significant finding of the Davisson-Germer experiment regarding the nature of cathode rays?

What was the outcome of Millikan's experiments on the photoelectric effect conducted between 1906 and 1916?

What does the stopping potential (V₀) depend on in the photoelectric effect?

What is the relationship between the maximum kinetic energy of photoelectrons and the frequency of the incident radiation?

What phenomenon demonstrates the dual nature of light, as established by historical experiments?

What is the energy of a photon emitted by light of frequency 6.0 × 10^14 Hz?

What is the de Broglie wavelength associated with a particle given its momentum?

What is the energy of a photon produced by monochromatic light of frequency 6.0 × 10^14 Hz?

What is the significance of the de Broglie wavelength being extremely small for macroscopic objects?

What happens to the photocurrent when the intensity of light is increased while keeping the frequency of incident radiation constant?

What is the minimum frequency of light required to emit electrons from a metal surface in the photoelectric effect called?

What happens to the photoelectric current when the intensity of incident light is increased while keeping the frequency constant?

What is the energy of a photon produced by a laser with a frequency of 6.0 × 10^14 Hz?

What is the energy of a photon in a light beam with a frequency of 6.0 × 10^14 Hz?

What is the work function of caesium in electron volts (eV)?

What is the de Broglie wavelength associated with a particle inversely proportional to?

What is the de Broglie wavelength formula for a particle?

Which of the following combinations correctly describe the processes by which electrons can be emitted from a metal surface?

Which of the following statements about de Broglie wavelength is correct?

Which of the following statements about de Broglie wavelength is correct?

Which of the following statements about the Davisson-Germer experiment is correct?

Which of the following combinations about the photoelectric effect is correct?

Which of the following statements regarding the photoelectric effect is correct?

Which of the following combinations about the photoelectric effect is correct?

Which of the following statements about de Broglie wavelength is correct?

Which of the following statements about the photoelectric effect is correct?

Which of the following statements about the dual nature of matter and radiation is correct?

Which of the following statements regarding de Broglie wavelength is correct?

Which of the following statements about the dual nature of light and the photoelectric effect is correct?

Which of the following statements about de Broglie wavelength is correct?

Which of the following does the stopping potential for the photoelectric effect depend on?

If the stopping potential for a particular metal is 2 V when exposed to light of frequency 6 x 10^14 Hz, what is the maximum kinetic energy of the photoelectrons emitted?

Which of the following statements about the Davisson-Germer experiment is correct?

If the work function of a metal is 2.14 eV and light of frequency 6 × 10^14 Hz is incident on it, what is the maximum kinetic energy of the emitted photoelectrons?

A laser emits monochromatic light with a frequency of 6.0 × 10^14 Hz and a power of 2.0 × 10^-3 W. What is the energy of a single photon in this light beam?

What is the threshold frequency \(f_0\) of a metal with a work function of 3.0 eV?

What is the de Broglie wavelength of a particle with mass 0.15 kg moving at a speed of 30.0 m/s?

What is the de Broglie wavelength of a proton (mass = 1.67 × 10^-27 kg) moving with a speed of 2.0 × 10^6 m/s?

If monochromatic light of frequency 5.0 × 10^14 Hz is produced by a laser with a power of 3.0 × 10^-3 W, how many photons are emitted per second?

In the Davisson-Germer experiment, electrons are accelerated to a certain speed before hitting a nickel crystal. Given that the speeds of cathode ray particles are between 0.1 to 0.2 times the speed of light, what is the range of de Broglie wavelengths for electrons moving at these speeds? (Assume the mass of an electron is 9.11 × 10^(-31) kg and Planck's constant h is 6.63 × 10^(-34) J·s.)