What is the threshold frequency for photoemission of electrons when light of frequency 7.21 × 10 14 Hz is incident on a metal surface, resulting in electrons being ejected with a maximum speed of 6.0 × 10 5 m/s?

Correct answer: D. 4.73 × 10 14 Hz Correct Option is : (D) 4.73 × 10 14 Hz

NEET

Exam: NEET
Subject: Physics
Chapter: Dual Nature of Matter

NEET · Physics · Dual Nature of Matter

What is the threshold frequency for photoemission of electrons when...

What is the threshold frequency for photoemission of electrons when light of frequency 7.21 × 10¹⁴Hz is incident on a metal surface, resulting in electrons being ejected with a maximum speed of 6.0 × 10⁵m/s?

Options

A7.21 × 10¹⁴Hz
B6.0 × 10⁵Hz
C1.21 × 10⁹Hz
D4.73 × 10¹⁴Hz

Correct answer

D. 4.73 × 10¹⁴Hz

Step-by-step solution

Correct Option is : (D)
4.73 × 10¹⁴Hz

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