JEE Advanced 2007Paper 1
- Exam
- JEE Advanced
- Year
- 2007
- Paper
- Paper 1
- Subject
- Physics
- Chapter
- Electromagnetic Waves
JEE Advanced 2007 · Paper 1 · Physics · Electromagnetic Waves
Statement I If the accelerating potential in an X-ray tube is...
Statement I If the accelerating potential in an X-ray tube is increased, the wavelengths of the characteristic -rays do not change.
Statement II When an electron beam strikes the target in an X-ray tube, part of the kinetic energy is converted into X-ray energy.
Options
- AStatement I is true, Statement II is true; Statement II is a correct explanation for Statement I
- BStatement I is true, Statement II is true; Statement II is NOT a correct explanation for Statement I
- CStatement I is true, Statement II is false
- DStatement I is false, Statement II is true
Correct answer
B. Statement I is true, Statement II is true; Statement II is NOT a correct explanation for Statement I
Step-by-step solution
Cut-off wavelength depends on the accelerating voltage, not the characteristic -rays. Further approximately kinetic energy of the electrons is utilised in producing X-rays. Rest is lost in heat.
Option (b) is correct.