An `X-`ray tube operates at `27 kV`. Find the maximum speed of an electron striking the anticathode. Given mass of electron `=9xx10^(31)kg` and charge on electron `=1.6xx10^(-19)C`.
1 Answers
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The specific charge (charge/mass) of cathode rays is x unit, when hydrogen is filled in the discharge tube. What will be its value, when deuterium `(D
Correct Answer - D The value of (e/m) for cathode rays independent on gas filled in the tube
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
In a X-ray tube, after an electron has been removed from an inner shell of a target atom, an electron from outer shell falls into the vacancy and the
Correct Answer - `E_(k) - 2E_(L)`
2 Answers 1 views
An electron of mass `9xx10^(-31)` kg carrying `1.6xx10^(-19)`C starts from rest from one point and reaches a second conductor with a velocity `10^(7)m
Correct Answer - 281.25V
2 Answers 1 views
The voltage across the electrodes of a cathode ray tube is `1000 V`. Calculate the speed of the electron. Given mass of an electron `=.1xx10^(-31)kg`
Correct Answer - `1.875 xx10^(7)ms^(-1)`
2 Answers 3 views
What potential difference should be applied across an X-ray tube to get X-ray of wavelength not less than 0.10 nm? What is the maximum energy of a pho
Correct Answer - `[12.431 kV,1.99 xx10^(-15) J]`
2 Answers 1 views
Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristics K or L X-ray
Correct Answer - [Less than 11.3 kV]
2 Answers 1 views
When 40 kV is applied across an X-ray tube, X-ray is obtained with a maximum frequency of `9.7 xx 10 ^18` Hz. Calculate the value of Planck constant f
Correct Answer - `4.12 xx 10^(-15) eV_(-s)`
2 Answers 1 views
An x-ray tube is operated at `20 kV` and the current through the tube is `0*5 mA`. Find (a) the number of electrons hitting the target per second, (b)
Correct Answer - `10`
2 Answers 1 views
Find the minimum energy that a `gamma`-ray must have to give rise to an electron -positron pair. `{:("Mass of electron",= 0.00055 am u,),("Mass of pos
Correct Answer - 1.024 MeV
2 Answers 1 views