Question

A student fixes a sheet of white paper on a drawing board. He places a bar

magnet in the centre of it. He sprinkles some iron filings uniformly and around the bar magnet.

Then he taps the board gently and observes that the iron filings arrange themselves in a particular pattern.


i) Why do the iron filings arrange in the pattern?

a) Due to force exerted by the magnet within its magnetic field

b) Due to force exerted by the magnet outside the magnetic field

c) Due to pressure of magnetic field

d) Due to gravitational force

ii) The lines along which the iron filings align represent ………………….. It moves from …………..

a) Gravitational force, North to South Pole

b) Magnetic fields lines , South to North Pole

c) Gravitational force, South to North Pole

d) Magnetic fields lines, North to South Pole

iii) What does the crowding of iron filings at the end of magnet indicate?

a) Magnetic field is weaker near the poles of magnet

b) Magnetic field is strongest near the poles of the magnet

c) Magnetic field is neither weaker nor strongest near the poles of magnet

d) None of these.

iv)Which of the following statement is correct about magnetic field strength?

a) Closer the lines more will be the strength, farther the lines lesser will be the field strength.

b) Closer the lines less will be the strength, farther the lines more will be the field strength

c) Magnetic field strength is same everywhere.

d) None of these.

v) Which of these is not a source of magnetic field?

a) Magnet c) Moving Charges

b) Electric current d) Battery


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Answer 1

Answer:

1 c

2 b

3 b

4 a

5 d

Hope it helps If I am wrong plz tell me