Physics · May / June 2020 · Paper 42 · Question 10
0625
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Fig. 10.1 shows a vacuum tube with a radioactive source. The radioactive source emits α-particles, β-particles and γ -rays. There is a very strong magnetic field between the N pole and the S pole of the magnet. vacuum N S lead cylinder with narrow central hole radioactive source α-particles, β-particles and γ-rays Fig. 10.1
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10(a)[2]
(beam) narrow OR straight OR in one direction owtte
radiation in other directions absorbed
10(b)(i)[2]
out of page / towards viewer
equiv. to current in direction of beam
10(b)(ii)[2]
opposite to (i)
equiv. to current in opposite direction to beam OR LH rule mentioned or described
10(b)(iii)[2]
none
(γ) uncharged OR not equivalent to current
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