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Which of the following statements is correct?
  1. X-ray is produced w hen cathode rays strike metals of high atomic weight.
  2. The velocity of light in empty space will change if the source of light is set into motion.
  3. Choke coil is used as a resistance in A.C. circuits.
  4. Gamma rays can not be deflected by a magnetic field.
  • a)
    I, II and III
  • b)
    I, III and IV
  • c)
    II, III and IV
  • d)
    I, II, III and IV
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the following statements is correct? X-ray is produced w hen ...
Discussing step by step
First we know that x rays are produced by high speed e when bombarded at metal surface, now cathode rays carry electrons (CATHODE IS POSITIVE ELECTRODE BUT CATHODE RAYS CARRY ELECRONS). It is correct...
Going on third option, choke coil is used in ac only because for ac we have some value of reactance as w is not equal to zero... For dc reactance becomes zero hence no use...
Also u know that gamma rays are neutral rays so no deflection....
For second option I am not sure, i think no effect will be there bcoz speed of light is far more greater than speed of object producing it..... I think it will have some effect when object moves with a large speed....
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Community Answer
Which of the following statements is correct? X-ray is produced w hen ...
Explanation:

X-ray is produced when cathode rays strike metals of high atomic weight:
- This statement is correct as X-rays are produced when high-speed electrons (cathode rays) strike a target material, usually a metal with high atomic weight.

Choke coil is used as a resistance in A.C. circuits:
- This statement is incorrect. A choke coil is used in AC circuits to block high-frequency alternating current while allowing DC or low-frequency AC to pass. It is not used as a resistance.

Gamma rays cannot be deflected by a magnetic field:
- This statement is correct. Gamma rays are electromagnetic radiation of high frequency and energy, and their path cannot be altered by a magnetic field.
Therefore, the correct statements are I, III, and IV. So, option 'B' is the correct answer.
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Which of the following statements is correct? X-ray is produced w hen cathode rays strike metals of high atomic weight. The velocity of light in empty space will change if the source of light is set into motion. Choke coil is used as a resistance in A.C. circuits. Gamma rays can not be deflected by a magnetic field.a) I, II and IIIb) I, III and IVc) II, III and IVd) I, II, III and IVCorrect answer is option 'B'. Can you explain this answer?
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Which of the following statements is correct? X-ray is produced w hen cathode rays strike metals of high atomic weight. The velocity of light in empty space will change if the source of light is set into motion. Choke coil is used as a resistance in A.C. circuits. Gamma rays can not be deflected by a magnetic field.a) I, II and IIIb) I, III and IVc) II, III and IVd) I, II, III and IVCorrect answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following statements is correct? X-ray is produced w hen cathode rays strike metals of high atomic weight. The velocity of light in empty space will change if the source of light is set into motion. Choke coil is used as a resistance in A.C. circuits. Gamma rays can not be deflected by a magnetic field.a) I, II and IIIb) I, III and IVc) II, III and IVd) I, II, III and IVCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following statements is correct? X-ray is produced w hen cathode rays strike metals of high atomic weight. The velocity of light in empty space will change if the source of light is set into motion. Choke coil is used as a resistance in A.C. circuits. Gamma rays can not be deflected by a magnetic field.a) I, II and IIIb) I, III and IVc) II, III and IVd) I, II, III and IVCorrect answer is option 'B'. Can you explain this answer?.
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