(D) The power or rate of heat production is given by $P = VI$.Given $V = 60 \ kV = 60 \times 10^3 \ V$ and $I = 50 \ mA = 50 \times 10^{-3} \ A$.$P =

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(D) The power or rate of heat production is given by $P = VI$.Given $V = 60 \ kV = 60 \times 10^3 \ V$ and $I = 50 \ mA = 50 \times 10^{-3} \ A$.$P = (60 \times 10^3) \times (50 \times 10^{-3}) = 3000 \ J/s$.Since $1 \ calorie = 4.2 \ J$,the rate of heat production in $cal/s$ is $\frac{3000}{4.2} \ cal/s$.$P \approx 714.3 \ cal/s$.Thus,the correct option is $D$.

Class 12 Physics Atoms X-Rays

Medium

When an $X$-ray tube operates at $60 \ kV$,the observed tube current is $50 \ mA$. Assuming that the total energy of the electrons is converted into heat,the rate of heat production at the anode in $cal/s$ is:

A
$100$
B
$300$
C
$500$
D
$714$

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X-Rays

$X$-rays do not undergo diffraction because of their .....

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Calculate the wavelength of the $K_{\alpha}$ line for $Z=31$, given $a=5 \times 10^7 \text{ Hz}^{1/2}$ for a characteristic $X$-ray spectrum.

DifficultAP EAMCET 2011

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Assertion: $X-$rays travel with the speed of light.
Reason: $X-$rays are electromagnetic rays.

EasyAIIMS 2001

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Electrons with energy $80 \ keV$ are incident on the tungsten target of an $X$-ray tube. $K$-shell electrons of tungsten have an ionization energy of $72.5 \ keV$. The $X$-rays emitted by the tube contain only:

MediumIIT 2000

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What determines the hardness of the $X-$rays obtained from the Coolidge tube?

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When an $X$-ray tube operates at $60 \ kV$,the observed tube current is $50 \ mA$. Assuming that the total energy of the electrons is converted into heat,the rate of heat production at the anode in $cal/s$ is:

Similar Questions

$X$-rays do not undergo diffraction because of their .....

Calculate the wavelength of the $K_{\alpha}$ line for $Z=31$, given $a=5 \times 10^7 \text{ Hz}^{1/2}$ for a characteristic $X$-ray spectrum.

Assertion: $X-$rays travel with the speed of light.Reason: $X-$rays are electromagnetic rays.

Electrons with energy $80 \ keV$ are incident on the tungsten target of an $X$-ray tube. $K$-shell electrons of tungsten have an ionization energy of $72.5 \ keV$. The $X$-rays emitted by the tube contain only:

What determines the hardness of the $X-$rays obtained from the Coolidge tube?

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Assertion: $X-$rays travel with the speed of light.
Reason: $X-$rays are electromagnetic rays.