question_answer

Shreya's friend Ravi fell from a stool of height 2m. He got injured his leg. Shreya brought him to hospital. He was examined by the doctor, who advised for an X-ray test, which confirmed a hairline fracture.

(i) How are X-rays produced?

(ii) What kind of girl is Shreya?

(iii) Arrange X-rays, ultraviolet rays and visible light according to their energy.

Answer:

(i) X-rays are produced by bombarding a metal target by highly energetic electrons.

(ii) Shreya is sympathetic, responsible ad helping nature girl.

(iii) Since, we know that, the energy of an electromagnetic wave, \[E\propto v\] (frequency)

\[\because {{v}_{visible\,\,light}}<{{v}_{ultraviolet\,\,rays}}<{{v}_{X-rays}}\] Thus, \[{{E}_{visible\,\,light}}<{{E}_{ultraviolet\,\,rays}}<{{E}_{X-rays}}\]