Wilhelm Roentgen showed that when electrons strike a material in the cathode ray tubes, some rays are produced. Consider the following statements regarding these rays. I. These can cause fluorescence in the fluoroscent materials placed outside the cathode ray tubes. II. These rays are named as X-rays. III. These rays are deflected by both, electric and magnetic fields. IV. These are used to study interior of the objects. Choose the option containing all the incorrect statement(s).

Question

Wilhelm Roentgen showed that when electrons strike a material in the cathode ray tubes, some rays are produced. Consider the following statements regarding these rays. I. These can cause fluorescence in the fluoroscent materials placed outside the cathode ray tubes. II. These rays are named as X-rays. III. These rays are deflected by both, electric and magnetic fields. IV. These are used to study interior of the objects. Choose the option containing all the incorrect statement(s). (A) I and III (B) Only III (C) Only IV (D) I, II, IV

Tardigrade Admin · Accepted Answer

Statement III is incorrect. It's correct form is as follows: X-rays are not deflected by electric and magnetic fields and have a very high penetrating power through the matter and that is the reason that these rays are used to study the interior of the objects. Rest other statements are correct.

$I$ and $III$

Only $III$

Only $I V$

$I, II, I V$

I and III

Only III

Only IV

I,II,IV

Statement III is incorrect. It's correct form is as follows : X-rays are not deflected by electric and magnetic fields and have a very high penetrating power through the matter and that is the reason that these rays are used to study the interior of the objects. Rest other statements are correct.

$I$ and $III$

Only $III$

Only $I V$

$I, II, I V$