Which of the following is NOT true ? - CUETMOCK

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Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

Which of the following is NOT true ?

Options:

Radiation energy is build up of discrete units called photons.

Every metallic surface is characterised by specific work function.

Photoelectric emission was discovered by Einstein.

Sodium is a photosensitive substance.

Correct Answer:

Photoelectric emission was discovered by Einstein.

Explanation:

Photoelectric emission was discovered by Hertz.

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