51. γ-rays are deflected by
52. Consider the following statements.
In a nuclear reactor, self-sustained chain reaction is possible because
1. More neutrons are released in each of the fission reactions.
2. The neutrons immediately take park in the fission process.
3. The fast neutrons are slowed down by graphite.
4. Every neutron released in the fission reaction initiates further fission.
Which of these statements are correct?
In a nuclear reactor, self-sustained chain reaction is possible because
1. More neutrons are released in each of the fission reactions.
2. The neutrons immediately take park in the fission process.
3. The fast neutrons are slowed down by graphite.
4. Every neutron released in the fission reaction initiates further fission.
Which of these statements are correct?
53. In photoelectic effect, the number of photo electrons emitted is proportional to
54. Photoelectric effect can be explained by assuming that light
55. In which state is Pokhran, the site of India's first nuclear explosion, located?
56. Why was the Thomson's model of an atom failed?
57. The Newton-Bhabha Fund Program was a joint initiative of
58. In the modem day's nuclear medicine plays a vital role in Medical Science, it is exactly
59. The official code name of Pokhran nuclear test 1974, was
60. Photovoltaic cells are
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