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Why is 1921 important in Einstein's life?

Answer and explanation

Correct answer: He received the Nobel Prize in Physics

The governing concept is the association of a significant year with a major achievement. In 1921 Einstein was awarded the Nobel Prize in Physics, officially recognising his outstanding contribution to physics, especially his explanation of the photoelectric effect. Therefore option B is correct. Option A refers to his birth in Ulm in 1879, not to 1921. Option C is an invented event and is unrelated to the biography. Option D belongs to an earlier period of his education and does not explain the importance of 1921. Remembering the date together with the achievement prevents confusion among the many milestones in Einstein's life. The year marks international scientific recognition, not his birth, speech development or school departure.

Related tags

1921Nobel PrizePhysicsEinstein AchievementBiography Of Albert EinsteinA Truly Beautiful MindEnglishClass 9 Mcq

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