NCERT Class 6 Mathematics Fifth Chapter Understanding Elementary Shapes Exercise 5.2 Solutions
EXERCISE 5.2
(1) What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from
(a) 3 to 9
(b) 4 to 7
(c) 7 to 10
(d) 12 to 9
(e) 1 to 10
(f) 6 to 3
(2) Where will the hand of a clock stop if it
(3) Which direction will you face if you start facing
(Should we specify clockwise or anti-clockwise for this last question? Why not?)
Ans: It is immaterial whether we turn clockwise, because one full revolution will bring us back to the original position.
(4) What part of a revolution have you turned through if you stand facing
(a) East and turn clockwise to face north?
(b) South and turn clockwise to face east?
(c) West and turn clockwise to face east?
(5) Find the number of right angles turned through by the hour hand of a clock when it goes from
(a) 3 to 6
(b) 2 to 8
(c) 5 to 11
(d) 10 to 1
(e) 12 to 9
(f) 12 to 6
(6) How many right angles do you make if you start facing
(a) South and turn clockwise to west?
(b) North and turn anti-clockwise to east?
(c) West and turn to west?
(d) South and turn to north?
(7) 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?
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