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

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Value of 1 parts in clock

Value of 1 Parts in Clock

Value of 1 parts in clock

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

Answer:

(a) 3 to 9

Answer:

or two right angles

Face of clock imagine hands

Face of Clock Imagine Hands

Face of clock imagine hands

(b) 4 to 7

Answer:

or one right angle

(c) 7 to 10

Answer:

or one right angle

(d) 12 to 9

Answer:

or three right angles

(e) 1 to 10

Answer:

or three right angles

(f) 6 to 3

Answer:

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?

Answer:

Face of clock

Face of Clock

Face of clock

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

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

Answer:

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

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

Answer:

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

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

Answer:

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

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

Image of Revolution Clockwise of Direction

Image of Revolution Clockwise of Direction

Image of Revolution Clockwise of Direction

(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.

East and make 1/2 of a revolution, clockwise

East and Make 1/2 of a Revolution, Clockwise

East and make 1/2 of a revolution, clockwise

(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.

East and make 1 and 1/2 of a revolution, clockwise

East and Make 1 and 1/2 of a Revolution, Clockwise

East and make 1 and 1/2 of a revolution, clockwise

(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.

East and makes 3/4 of a revolution

East and Makes 3/4 of a Revolution

East and makes 3/4 of a revolution

(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.

South make one full revolution

South Make One Full Revolution

South make one full revolution

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.

East and turn clockwise to face north

East and Turn Clockwise to Face North

East and turn clockwise to face north

(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.

South and turn clockwise to face east

South and Turn Clockwise to Face East

South and turn clockwise to face east

(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.

West and turn clockwise to face east

West and Turn Clockwise to Face East

West and turn clockwise to face east