JEE Advanced 2021 Full Test 5 Paper 1

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SECTION – C (Numerical Answer Type)
This section contains 06 questions. The answer to each question is a NUMERICAL VALUE. For each question, enter the correct numerical value (in decimal notation, truncated/rounded‐off to the second decimal place; e.g. XXXXX.XX).

Question : 14 of 54

Marks: +1, -0

When the voltage applied to an X-ray tube increased from V1=15.5KV to V2=31KV, the wavelength interval between the Ka line and the short wavelength cut-off of the continuous X-ray spectrum increases by a factor of 1.3. Find the atomic number of the element of the target. If your answer is N fill value of

. (Take: he =1240eV and R=1×107∕m )

Your Answer:

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