# Mathematics Class 6 NCERT Solutions: Chapter 5 Understanding Elementary Shapes Exercise 5.2-Part 1

Q.1 What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from

(a) 3 to 9

or two right angles

(b) 4 to 7

or one right angle

(c) 7 to 10

or one right angle

(d) 12 to 9

or three right angles

(e) 1 to 10

or three right angles

(f) 6 to 3

or three right angles

Q.2 Where will the hand of a clock stop if it:

(a) Starts at 12 and make of a revolution, clockwise?

So, start at 12 and make of a revolution, clockwise at 6.

(b) Starts at 2 and make of a revolution, clockwise?

So, start at 2 and make of a revolution, clockwise at 8.

(c) Starts at 5 and makes make of a revolution, clockwise?

So, start at 5 and make of a revolution, clockwise at 8.

(d) Starts at 5 and makes make of a revolution, clockwise?

So, start at 5 and make of a revolution, clockwise at 2.

Q.3 Which direction will you face if you start facing:

(a) East and make of a revolution, clockwise?

Answer: If we start facing east and make of revolution clockwise, then we will face the west direction.

(b) East and make of a revolution, clockwise?

Answer: If we start facing east and make of revolution clockwise, then we will face the west direction.

(c) East and makes of a revolution, clockwise?

Answer: If we start facing east and make of revolution clockwise, then we will face the North direction.

(d) South and make one full revolution?

(Should we specify clockwise or anti-clockwise for this last question? Why not?)

Answer: South, one full revolution will bring us back to the original position.

Q.4 What part of a revolution have you turned through if you stand facing:

(a) East and turn clockwise to face north?

Answer: If we start facing east and turn clockwise to face north, then we have to make of a revolution.

(b) South and turn clockwise to face east?

Answer: If we start facing south and turn clockwise to face east, then we have to make of a revolution.

(c) West and turn clockwise to face east?

Answer: If we start facing west and turn clockwise to face east, then we have to make of a revolution.