An electron gun G emits electrons of energy 2 keV travelling in the positive x - direction. The electrons are required to hit the spot of S where GS=0.1 m, and the line GS makes an angle of 60∘ with the x - axis as shown in figure. If a uniform magnetic field →B parallel to GS exists in the region outside the electron gun , then minimum value of B needed to make the electron hit S is k mT Find the value of k (Give the nearest integer value)

An electron gun G emits electrons of energy 2 keV travelling in the po

1.	An electron gun G emits electrons of energy 2 keV travelling in the positive x - direction. The electrons are required to hit the spot of S where GS=0.1 m, and the line GS makes an angle of 60∘ with the x - axis as shown in figure. If a uniform magnetic field →B parallel to GS exists in the region outside the electron gun , then minimum value of B needed to make the electron hit S is k mT Find the value of k (Give the nearest integer value)
Answer» An electron gun $G$ emits electrons of energy $2 keV$ travelling in the positive $x$ - direction. The electrons are required to hit the spot of $S$ where $GS = 0.1 m$ , and the line $GS$ makes an angle of $60^{\circ}$ with the $x$ - axis as shown in figure. If a uniform magnetic field $\to B$ parallel to $GS$ exists in the region outside the electron gun , then minimum value of $B$ needed to make the electron hit $S$ is $k mT$ Find the value of k (Give the nearest integer value)

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