Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 7 PCB MCQ (Single Correct)

Needles and are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will

A
attract and strongly but repel
B
attract strongly, weakly and repel weakly
C
attract strongly, but repel and weakly
D
attract all three of them

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Text Solution

Verified by Experts
The correct answer is:
B

Ferromagnetic substance has magnetic domains whereas paramagnetic substances have magnetic dipoles which get attracted to a magnetic field. Ferromagnetic material magnetized strongly in the direction of magnetism field, Hence, will be attracted. Paramagnetic substance attracts weekly in the direction of field. Hence, will weakly attracted. Diamagnetic substances do not have magnetic dipole but in the presence of external magnetic field due to their orbital motion of electrons these substances are repelled. Hence, will be repelled.

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