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Ncert solutions

CHAPTERS

Q7) Where will the hour hand of a clock stop if it starts

(a) from 6 and turns through 1 right angle?

(b) from 8 and turns through 2 right angles?

(c) from 10 and turns through 3 right angles?

(d) from 7 and turns through 2 straight angles?

SOLUTION:

i) if the hour hand starts from 6 and turns through one right angle it will reach 9.

ii) if the hour hand starts from 8 and turns through two right angles it will reach 2.

iii) if the hour hand starts from 10 and turns through three right angles it will reach 7.

iv) if the hour hand starts from 7 and turns through two straight angles it will reach 7 because two straight angles make four right angles.

Q7) Where will the hour hand of a clock stop if it starts

(a) from 6 and turns through 1 right angle?

(b) from 8 and turns through 2 right angles?

(c) from 10 and turns through 3 right angles?

(d) from 7 and turns through 2 straight angles?

SOLUTION:

i) if the hour hand starts from 6 and turns through one right angle it will reach 9.

ii) if the hour hand starts from 8 and turns through two right angles it will reach 2.

iii) if the hour hand starts from 10 and turns through three right angles it will reach 7.

iv) if the hour hand starts from 7 and turns through two straight angles it will reach 7 because two straight angles make four right angles.

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