9th Class Science Sample Paper Science Olympiad Model Test Paper-21

  • question_answer
    Which one of the following statements is correct?
    i. Cathode rays cannot be deflected by an electric field.
    ii. Cathode rays can be deflected by a magnetic field.
    iii. Cathode rays produce X-rays on striking metal targets.
    iv. Cathode rays produce fluorescence.
    v. When cathode rays are allowed to fall on an object, the object acquires positive charge.

    A) i, ii and iii

    B) i, ii, iii and iv

    C) ii, iii and iv

    D) iii, iv and v

    E) None of these

    Correct Answer: C

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