National Science Olympiad Forum By SOF Olympiad Trainer - Page 144

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 6

Which of the following are possible sets of polarity when magnetising a steel bar PQ by the stroking method? (For magnets, N indicates north pole and S indicates south pole)

(i) 1 = N, 2 = S, P = N, Q = S
(ii) 1 = N, 2 = S, P = S, Q = N
(iii) 1 = S, 2 = N, P = S, Q = N
(iv) 1 = S, 2 = N, P = N, Q = S

A(i) and (ii) only
B(iii) and (iv) only
C(i) and (iii) only
D(ii) and (iv) only


Either b or d which one should i give very confusing???

Ans 1:

Class : Class 7
Deeeeeeeeeeeeeeeeeeee

Ans 2:

Class : Class 7
D

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Subject :NSO    Class : Class 1

Ans 1:

Class : Class 3
B

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3

Ans 2:

Class : Class 3

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

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