wiz-icon
MyQuestionIcon
MyQuestionIcon
12
You visited us 12 times! Enjoying our articles? Unlock Full Access!
Question

The cut off wavelength of continuous X-ray from two Coolidge tubes operating at 30 kV but using different target materials (molybdenum Z= 42 and tungsten Z = 74) are

A
1A,3A
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.3A,0.2A
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
0.414A,0.8A
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
0.414A,0.414A
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D 0.414A,0.414A
Cut off wavelength of continuous X-rays depends solely on the voltage applied and does not depend on the material of the target. Hence the two tubes will have the same cut off wavelength.
Ve=hv=hcλ or λ=hcVe=6.627×1034×3×10830×103×1.6×1019m=0.414×1010m=0.414A.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Coolidge Tube
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon