Q35. According to Einstein's photoelectric equation, the plot of the Kinetic Energy of the emitted p

Q: What is the correct answer for CUET UG Physics Q35?

The correct answer is d. Einstein's photoelectric equation is given by KE_max = hf - Φ, where KE_max is the maximum kinetic energy of the emitted photoelectrons, h is Planck's constant, f is the frequency of the incident radiation, and Φ is the work function of the metal. If we plot KE_max on the y-axis against frequency (f) on the x-axis, the equation takes the form of a straight line, y = mx + c. Comparing this, the slo

Q: Q35. According to Einstein's photoelectric equation, the plot of the Kinetic Energy of the emitted photoelectrons from a metal versus the frequency of the incident radiation gives a straight line…

The correct answer is d. Einstein's photoelectric equation is given by KE_max = hf - Φ, where KE_max is the maximum kinetic energy of the emitted photoelectrons, h is Planck's constant, f is the frequency of the incident radiation, and Φ is the work function of the metal. If we plot KE_max on the y-axis against frequency (f) on the x-axis, the equation takes the form of a straight line, y = mx + c. Comparing this, the slo

Q: What are the options for this CUET UG Physics question?

A. depends on the nature of the metal used · B. depends on the intensity of the radiation · C. depends both on the intensity of the radiation and the metal used · D. is the same for all metals and independent of the intensity of the radiation

Question

Q35. According to Einstein's photoelectric equation, the plot of the Kinetic Energy of the emitted photoelectrons from a metal versus the frequency of the incident radiation gives a straight line whose slope:
(a) depends on the nature of the metal used
(b) depends on the intensity of the radiation
(c) depends both on the intensity of the radiation and the metal used
(d) is the same for all metals and independent of the intensity of the radiation

FirstInTest · Accepted Answer

Einstein's photoelectric equation is given by KE_max = hf - Φ, where KE_max is the maximum kinetic energy of the emitted photoelectrons, h is Planck's constant, f is the frequency of the incident radiation, and Φ is the work function of the metal. If we plot KE_max on the y-axis against frequency (f) on the x-axis, the equation takes the form of a straight line, y = mx + c. Comparing this, the slope (m) of the plot is equal to Planck's constant (h). Planck's constant is a fundamental universal constant. It does not depend on the specific metal used (which influences the work function Φ, affecting the y-intercept but not the slope) nor on the intensity of the incident radiation (which affects the number of photoelectrons but not their maximum kinetic energy). Therefore, the slope of the KE_max vs. f plot is the same for all metals and independent of the intensity of the radiation. Options (a), (b), and (c) are incorrect as they incorrectly suggest dependence on the metal or intensity.

Answer

depends on the nature of the metal used

Answer

depends on the intensity of the radiation

Answer

depends both on the intensity of the radiation and the metal used

Answer

is the same for all metals and independent of the intensity of the radiation

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