On operating an X-ray tube at 1 kV. X-rays of minimum wavelength `6.22Å` are producd. I fht tube is operated at `10 kV`, then the minimum wavelength o

Monjur Alahi

On operating an X-ray tube at 1 kV. X-rays of minimum wavelength `6.22Å` are producd. I fht tube is operated at `10 kV`, then the minimum wavelength of `X`-rays prodcued will be
A. `0.622Å`
B. `6.22Å`
C. `3.11 Å`
D. `62.2 Å`


0 like 0 dislike
2 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct Answer - A
`lambda_(mn)prop (1)/(V) so (lambda)/(6.22) = (1)/(10) rArr lambda_(min)=0.622 A`

0 like 0 dislike
2 views
Talk Doctor Online in Bissoy App
An X-ray tube is operated at 30 eV. If a particular electron loses 10% of its kinetic energy to emit an X-ray photon during the collision. Find the wa

Kinetic energy of electron =30 eV Acccording to the question , 10% of this energy is converted to photon which is given by `(10)/(100)xx30=3 kV` `:. " " lambda_("min")("in"Å)=(12375)/(V("in volt"))=(12375)/(3xx10^3)=4.12Å`...

2 Answers 1 views
The operating voltage in an -X-ray tube is increased to 3 times the original value of when the short wavelength limits shifs by 25 nm. Find the origin

As we know, `(hc)/(lambda)=eVrArrlambdaprop(1)/(V)` `:. " " (lambda_(1))/(lambda_(2))=(V_(2))/(V_(1))` According to the question, `(lambda)/(lambda-25)=(3V)/(V)` `rArr" " lambda =3lambda-3xx25` `rArr" "lambda=37.5 nm=375Å` `:. E(ev)=(12375)/(lambda("in"Å))=(12375)/(375)=33.eV` `rArr" " eV_(1)=33.eV` `rArr" " V_(1)=33V`

2 Answers 1 views
An X-ray tube is operated at 50 kV. The minimum wavelength produced is

Correct Answer - C Minimum eavelength produced `lambda_("min")=(12375)/(50xx10^(3))Å=0.240.25Å`

2 Answers 1 views
X-rays are being produced in a tube operating at `10^(5)V.` The velocity of X-rays produced is

Correct Answer - A X-rays travel in straight line with speed of light i.e., `3xx10^(8)m//s.`

2 Answers 1 views
A metal block is exposed to beams of X-rays of different wavelength. X-rays of which wavelength penetrate most

Correct Answer - A Pentarting power is greater fore lower wavelength.

2 Answers 2 views
If 10000 V is applied across an X-ray tube, what will be the ratio of de-Broglie wavelength of the incident electrons to the shortest wavelength X-ray

Correct Answer - A For incident electron ,`(1)/(2)mv^(2)=eV` or `" " p^(2)=2meV` `:.` de-Broglie wavelength , `lambda_(1)=(h)/(p)=(h)/(sqrt(2mev))` Shortest X-rays wavelength, `lambda_(2)=(hc)/(eV)` `:. " " (lamda_(1))/(lambda_(2))=(1)/(c)sqrt(((V)/(2))((e)/(m)))` `" " =sqrt((10^(4))/(2)xx1.8xx10^(11))/(3xx10^(8))=0.1`

2 Answers 2 views
A. Wavelength of microwaves is greater than that of ultraviolet rays. B. The wavelength of infrared rays is lesser than that of ultraviolet rays. C. T

Correct Answer - D `lambda_("micro") gt lambda_("infrared") gt lambda_("ultraviolet") gt lambda_("gamma")`

2 Answers 1 views
In an X-rays tube, electrons striking a target are brought to rest, causing X-rays to be emitted. In a paricular X-ray tube, the maximum frequency of

Correct Answer - D `hf_(max)=eV f_(max) prop V (f_(0))/(f)=(V)/(2V)`

2 Answers 1 views
An X ray tube with Copper target is found to emit characteristic X rays other than only due to Copper. The ka lie of Copper has a wavelength of `1.540

Correct Answer - `._(28)Ni`

2 Answers 1 views
An X-ray tube has nickel as target. The wavelength difference between the ka X-ray and the cut-off wavelength of continuous X-ray spectrum is 84 pm. F

Correct Answer - `14.8 kV`

2 Answers 1 views
X