CBSE Class 6th Solutions, Class 6th Maths Solutions
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Detailed Solutions for NCERT Class 6th Mathematics Chapter 5 – Understanding Elementary Shapes – Exercise 5.2

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Questions and Solutions for NCERT Class 6th Mathematics Chapter 5 – Understanding Elementary Shapes – 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

Ans: When the hour hand of a clock it goes from 3 to 9 it turns two right angles or 1/2 fraction of the clock.

(b) 4 to 7

Ans: When the hour hand of a clock it goes from 4 to 7 it turns one right angle or 1/4 fraction of the clock.

(c) 7 to 10

Ans: When the hour hand of a clock it goes from 7 to 10 it turns one right angle or 1/4 fraction of the clock.

(d) 12 to 9

Ans: When the hour hand of a clock it goes from 12 to 9 it turns three right angles or 3/4 fraction of the clock.

(e) 1 to 10

Ans: When the hour hand of a clock it goes from 1 to 10 it turns three right angles or 3/4 fraction of the clock.

(f) 6 to 3

Ans: When the hour hand of a clock it goes from 6 to 3 it turns three right angles or 3/4 fraction of the clock.

2. Where will the hand of a clock stop if it
(a) starts at 12 and makes 1/2 of a revolution, clockwise?

Ans: At 6

(b) starts at 2 and makes 1/2 of a revolution, clockwise?

Ans: At 8

(c) starts at 5 and makes 1/4 of a revolution, clockwise?

Ans: At 8

(d) starts at 5 and makes 3/4 of a revolution, clockwise?

Ans: At 2

3. Which direction will you face if you start facing
(a) east and make 1/2 of a revolution clockwise?

Ans: West

(b) east and make 1 1/2 of a revolution clockwise?

Ans: West

(c) west and make 3/4 of a revolution anti-clockwise?

Ans: North

(d) south and make one full revolution?
(Should we specify clockwise or anti-clockwise for this last question? Why not?)

Ans: South

It is not necessary to specify clockwise or anti- clockwise because one full revolution will bring back to same position.

4. What part of a revolution have you turned through if you stand facing
(a) east and turn clockwise to face north?

Ans: 3/4

(b) south and turn clockwise to face east?

Ans: 3/4

(c) west and turn clockwise to face east?

Ans: 1/2

5. Find the number of right angles turned through by the hour hand of a clock when it goes from
(a) 3 to 6

Ans: 1 right angle

(b) 2 to 8

Ans: 2 right angles

(c) 5 to 11

Ans: 2 right angles

(d) 10 to 1

Ans: 1 right angle

(e) 12 to 9

Ans: 3 right angles

(f) 12 to 6

Ans: 2 right angles

6. How many right angles do you make if you start facing
(a) south and turn clockwise to west?

Ans: 1 right angle

(b) north and turn anti-clockwise to east?

Ans: 3 right angles

(c) west and turn to west?

Ans: 4 right angles

(d) south and turn to north?

Ans: 2 right angles

7. Where will the hour hand of a clock stop if it starts
(a) from 6 and turns through 1 right angle?

Ans: At 9

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

Ans: At 2

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

Ans: At 7

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

Ans: At 7

You can find the solutions for Class 6 Mathematics previous exercises from here

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