Modern Physics - Study Mode
[#161] In a nuclear reactor, . . . . . . . . is used to control the rate of fission reaction which itself absorbs neutrons without fission.
Correct Answer
(D) cadmium
[#162] Which of the following is used for regulated electric supply?
Correct Answer
(A) Zener diode
[#163] Consider the following statements about visible light, UV light and X-ray. 1. The wavelength of visible light is more than that of X-ray. 2. The energy of X-ray photons is higher than that of UV light photons. 3. The energy of UV light photons is less than that of visible light photons. Which of the statement(s) given above is/are correct?
Correct Answer
(B) 1 and 2
[#164] Beta rays emitted by a radioactive material are
Correct Answer
(B) charged particles emitted by nucleus
[#165] During nuclear fusion,
Correct Answer
(C) Two light nuclei form a heavy nucleus