Question

21.
AT 22.
AI 23.
24.
25.
(iv) Formation of the viable embryo in the recipient eggs
19. Read the following and answer any four questions.
4
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 around the bar magnet. Then he taps the board gently
and observes that the iron filings arrange themselves in a particular pattern.
(a) Why do the iron filings arrange in a pattern?
by Due to force exerted by the magnet within its magnetic field.
(ii) Due to force exerted by the magnet outside the magnetic field.
(ii) Due to pressure of magnetic field.
(iv) Due to gravitational force.
(b) The lines along which the iron filings align represent
It moves from
(i) Gravitational force, North to South pole
(ii) Magnetic field lines, South to North pole
(iii) Gravitational force, South to North pole
Magnetic field lines, North to South pole
(c) What does the crowding of iron filings at the end of the magnet indicate?
(i) Magnetic field is weaker near the poles of the magnet.
(i) Magnetic field is strongest near the poles of the magnet.
(iii) Magnetic field is neither weaker nor strongest near the poles of the magnet.
(iv) None of these
(d) Which of the following statements is correct about magnetic field strength?
(i) Closer the lines, more will be the strength and farther the lines, lesser will be the field
strength
(ii) Closer the lines, less will be the strength and farther the lines, more will be the field
strength
(iii) Magnetic field strength is same everywhere.
(iv) None of these
AI 26.
SEC
AI 27​

Answer 1

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