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1
IIT-JEE 2008 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

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

A
Wavelength of characteristic X-rays decreases when the atomic number of the target increases.
B
Cut-off wavelength of the continuous X-rays depends on the atomic number of the target.
C
Intensity of the characteristic X-rays depends on the electrical power given to the X-ray tube.
D
Cut-off wavelength of the continuous X-rays depends on the energy of the electrons in the X-ray tube.
2
IIT-JEE 2007 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-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

A
$$\lambda_{0}=\frac{2 m c \lambda^{2}}{h}$$
B
$$\lambda_{0}=\frac{2 h}{m c}$$
C
$$\lambda_{0}=\frac{2 m^{2} c^{2} \lambda^{3}}{h^{2}}$$
D
$$\lambda_{0}=\lambda$$
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Physics
Mechanics
Units & MeasurementsMotionLaws of MotionWork Power & EnergyImpulse & MomentumRotational MotionProperties of MatterHeat and ThermodynamicsSimple Harmonic MotionWavesGravitation
Electricity
ElectrostaticsCurrent ElectricityCapacitorMagnetismElectromagnetic InductionAlternating CurrentElectromagnetic Waves
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Modern Physics
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