Multiple choice

Which of the following statements are correct for work function? (a) It is defined as the energy required for emitting electrons from metallic surface. (b) Its value is generally expressed in joule. (c) It is a characteristic of a metal. (d) The work function for alkali metals is very high.

  1. Both (a) and (b)

  2. Both (a) and (c)

  3. Both (b) and (c)

  4. Both (b) and (d)

  5. Both (a) and (d)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Work function is defined as the energy required for emitting electrons from metallic surface. It is a characteristic of a metal. Both the statements are correct.

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