Dual Nature Of Light Question 469
Question: When a beam of accelerated electrons hits a target, a continuous X-ray spectrum is emitted from the target. Which of the following wavelength is absent in the X-ray spectrum, if the X-ray tube is operating at 40,000 volts [MP PMT 1993; NCERT 1984; MNR 1995; RPMT 2002]
Options:
A) 0.25 Å
B) 0.5 Å
C) 1.5 Å
D) 1.0 Å
Show Answer
Answer:
Correct Answer: A
Solution:
$ {\lambda_{\min }}=\frac{12375}{40,000}=0.30,{\AA} $ Hence wavelength less than 0.30 Å is not possible.
BETA
