What did Einstein propose in the theory of light? Time and motion are relative to

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

A. Time and motion are relative to the observer.

B. E = mc2

C. Light is composed of separate packets of energy.

D. Gravity is not a force.

* Đáp án

C

* Hướng dẫn giải

Đáp án C.

Key words: What, propose, theory of light

Clue: The second paper laid the foundation for the photon, or quantum, theory of light. In it he proposed that light is composed of separate packets of energy: Báo cáo thứ hai đặt nền móng cho các photon, hay lượng tử, lý thuyết về ánh sáng. Trong đó, ông đề xuất rằng ánh sáng gồm các gói năng lượng riêng biệt.

Dễ thấy đáp án chính xác là C. Light is composed of separate packets of energy

Copyright © 2021 HOCTAP247