JEE Main · 2023 · 08 Apr 2023 · Shift 2 · Modern Physics

The waves emitted when a metal target is bombarded with high energy electrons are

(A)Microwaves
(B)X-rays✓ Correct
(C)Infrared rays
(D)Radio Waves

Answer: (B)

Solution

When fast electrons strike a metal target they are sharply decelerated, and the kinetic energy they lose is radiated as high-frequency electromagnetic waves. This braking radiation, together with the characteristic lines from inner-shell transitions in the target atoms, lies in the X-ray region of the spectrum, which is the principle of the X-ray tube. The waves emitted are X-rays.

JEE Main · 2023 · 08 Apr 2023 · Shift 2 · Single correct option

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