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

Solution:

We will be using the concepts of revolution and clockwise rotation to solve this.

(a) 3 to 6 - The hour hand turns through 1 right angle starting from 3 to 6.

(b) 2 to 8 - The hour hand turns through 2 right angles starting from 2 to 8.

(c) 5 to 11- The hour hand turns through 2 right angles starting from 5 to 11.

(d) 10 to 1 - The hour hand turns through 1 right angle starting from 10 to 1.

(e) 12 to 9 - The hour hand turns through 3 right angles starting from 12 to 9.

(f) 12 to 6 - The hour hand turns through 2 right angles starting from 12 to 6.

NCERT Solutions Class 6 Maths Chapter 5 Exercise 5.2 Question 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

Summary:

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, are (a) 1, (b) 2, (c) 2, (d) 1, (e) 3, and (f) 2 respectively.

☛ Related Questions:

• 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
• Where Will The Hand Of A Clock Stop If It A Starts At 12 And Makes 1 2 Of A Revolution Clockwise B Starts At 2 And Makes 1 2 Of A Revolution Clockwise C Starts At 5 And Makes
• Which Direction Will You Face If You Start Facing A East And Make 1 2 Of A Revolution Clockwise Z B East And Make 1 1 2 Of A Revolution Clockwise Z C West And Make 3 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