42. Which of the following clearly distinguish(es) between magnetic fields and gravitational fields? Magnetic fields 1 Their effects can be shielded Gravitational fields Shielding is impossible All gravitational 2 They give rise to attractive or repulsive forces are attractive. forces 3 They are created by electric charges which are either stationary or moving. They are created by the property of mass.
42. Which of the following clearly distinguish(es) between magnetic fields and gravitational fields? Magnetic fields 1 Their effects can be shielded Gravitational fields Shielding is impossible All gravitational 2 They give rise to attractive or repulsive forces are attractive. forces 3 They are created by electric charges which are either stationary or moving. They are created by the property of mass.
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