Cuttoff frequwncy for an x-ray tube

  • Thread starter Thread starter ladiebug511
  • Start date Start date
  • Tags Tags
    Tube X-ray
AI Thread Summary
To calculate the cutoff frequency of an x-ray tube operating at 44kV, the formula used is frequency = work function/h. The user initially converted kV to eV but made an error in the value of Planck's constant. Correcting the value of Planck's constant from 1.626E-34 to 6.626E-34 resolved the issue. This highlights the importance of accurate constants in calculations. The discussion emphasizes the collaborative nature of problem-solving in physics.
ladiebug511
Messages
3
Reaction score
0
How would you calculate the cutoff frequency of an x-ray tube operating at 44kV? I am using frequency = work function/h. I have (44000eV x 1.602E-19J)/1.626E-34 but my answer is wrong. I'm thinking that I converted kV to eV incorrectly, but I'm not sure.
Thanks.
 
Physics news on Phys.org
ladiebug511 said:
How would you calculate the cutoff frequency of an x-ray tube operating at 44kV? I am using frequency = work function/h. I have (44000eV x 1.602E-19J)/1.626E-34 but my answer is wrong. I'm thinking that I converted kV to eV incorrectly, but I'm not sure.
Thanks.

Your value for Planck's constant is wrong (that 1 should be a 6). Does that fix it?
 
hage567 said:
Your value for Planck's constant is wrong (that 1 should be a 6). Does that fix it?

Yes. Thanks for pointing out my stupid mistake :) Sometimes it just takes a fresh set of eyes.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Effect of Change of Potential difference applied to an X-Ray tube
Replies
4
Views
4K
Photoelectric Effect Graph and Work Function Questions
Replies
25
Views
4K
Calculation of the least value of PD needed to produce x-rays
Replies
11
Views
2K
What is the potential for extremity doses in this X-ray exposure incident?
Replies
3
Views
1K
Stationary Target X-Ray Tubes - Energy
Replies
1
Views
1K
X-ray Tube Output: 80μGy/mAs at 1m, 900µGy/s @1m
Replies
4
Views
3K
Electron potential/momentum problem
Replies
5
Views
2K
Highest Frequency emitted by bremsstrahlung
Replies
7
Views
1K
Calculate vmax and voltage from X-ray distribution function
Replies
2
Views
2K
I Question about X-ray power emitted by the Coolidge tube
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top