Home Physics Magnetism and Matter Karnataka - CET Previous Year Question Which of the following statement proves that…
Physics Magnetism and Matter Karnataka - CET Previous Year Question MCQ (Single Correct)

Which of the following statement proves that earth has magnetic field?

A
Earth is surrounded by ionosphere.
B
The intensity of cosmic rays stream of charged particles is more as the poles then at the equator.
C
A large quantity of iron-ore is found in the earth.
D
Earth is a planet rotating about the North South axis.

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The correct answer is:
B

Due to the shape of the geometric field, the intensity of the charged cosmic radiation is higher at the poles than at the equator.

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