IIT-JEE 2008 Paper 1 Offline | Dual Nature of Radiation Question 22 | Physics

IIT-JEE 2008 Paper 1 Offline

MCQ (Single Correct Answer)

-1

Which one of the following statements is WRONG in the context of X-rays generated from a X-ray tube?

Wavelength of characteristic X-rays decreases when the atomic number of the target increases.

Cut-off wavelength of the continuous X-rays depends on the atomic number of the target.

Intensity of the characteristic X-rays depends on the electrical power given to the X-ray tube.

Cut-off wavelength of the continuous X-rays depends on the energy of the electrons in the X-ray tube.

IIT-JEE 2007 Paper 2 Offline

MCQ (Single Correct Answer)

-1

Electrons with de-Broglie wavelength $$\lambda$$ fall on the target in an X-ray tube. The cut-off wavelength of the emitted X-rays is

$$\lambda_{0}=\frac{2 m c \lambda^{2}}{h}$$

$$\lambda_{0}=\frac{2 h}{m c}$$

$$\lambda_{0}=\frac{2 m^{2} c^{2} \lambda^{3}}{h^{2}}$$

$$\lambda_{0}=\lambda$$

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