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======= ####61. Light of wavelength $5000 \AA$ falls on a sensitive plate with photo-electric work function of 1.9 $e V$ . The kinetic energy of the photo-electrons emitted will be

c3eec34ec6b1fad69db54a20ad4b2dca40c2aa54 (a) $0.58 e V$

(b) $2.48 e V$

(d) $1.16 e V$

[1998]

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Answer:

Correct Answer: 61. (a)

Solution:

(a) K.E. $= h v - h v_{0}$

$\begin{aligned} = \frac{h c}{λ} - h v_{0} = \frac{12375}{5000} - 1.9 \\ = 2.48 - 1.9 = 0.58 e V \end{aligned}$

Dual Nature of Radiation and Matter - Result Question 57

61. Light of wavelength $5000 \AA$ falls on a sensitive plate with photo-electric work function of 1.9 $e V$ . The kinetic energy of the photo-electrons emitted will be

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Answer:

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Dual Nature of Radiation and Matter - Result Question 57

61. Light of wavelength 5000\AA falls on a sensitive plate with photo-electric work function of 1.9 eV. The kinetic energy of the photo-electrons emitted will be

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Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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61. Light of wavelength $5000 \AA$ falls on a sensitive plate with photo-electric work function of 1.9 $e V$ . The kinetic energy of the photo-electrons emitted will be