An electron traveling with a speed u along the positive
x-axis enters into a region of magnetic field where B = –B₀
k ˆ ( x > 0). It comes out of the region with speed v then
(a) v = u at y > 0 (b) v = u at y < 0
(c) v > u at y > 0 (d) v > u at y < 0
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jwjwHard X-rays for the study of fractures in bones should have
a minimum wavelength of 10⁻¹¹ m. The accelerating voltage
for electrons in X-ray machine should be
(a) < 124 kV
(b) > 124 kV
(c) between 60 kV and 70 kV
(d) = 100 kVHard X-rays for the study of fractures in bones should have
a minimum wavelength of 10⁻¹¹ m. The accelerating voltage
for electrons in X-ray machine should be
(a) < 124 kV
(b) > 124 kV
(c) between 60 kV and 70 kV
(d) = 100 kV8i2i27171××~×~+/~;~_~^#*(@×#+--_÷@××××-÷
Answered by
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Answer:
F
=q(
v
×
B
)=−e(u
i
^
×B(−
k
^
))=euB(−
j
^
)
The spped will not change in a magnetic field.
The electron will not have y>0 during its course of motion.
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