Question 15 - CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ] - Solutions of Sample Papers for Class 10 Boards

Last updated at December 16, 2024 by Teachoo

The number of revolutions made by a circular wheel of radius 0.7m in rolling a distance of 176m is

(a) 22 (b) 24 (c) 75 (d) 40

Ques 15 (MCQ) - The number of revolutions made by a circular wheel of - CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ]

Sample paper Maths Class 10 - 2022 Boards - Standard.jpg

part 3 - Question 15 - CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ] - Solutions of Sample Papers for Class 10 Boards - Class 10

Next: Question 16 → Remove Ads Share on WhatsApp

Transcript

Question 15 The number of revolutions made by a circular wheel of radius 0.7m in rolling a distance of 176m is (a) 22 (b) 24 (c) 75 (d) 40 Here, Number of revolutions = (𝑻𝒐𝒕𝒂𝒍 𝒅𝒊𝒔𝒕𝒂𝒏𝒄𝒆)/(𝑫𝒊𝒔𝒕𝒂𝒏𝒄𝒆 𝒄𝒐𝒗𝒆𝒓𝒆𝒅 𝒊𝒏 𝟏 𝒓𝒆𝒗𝒐𝒍𝒖𝒕𝒊𝒐𝒏) Given Radius = 0.7 m, Total Distance = 176 m Therefore, Distance covered in one revolution = Circumference of wheel = 2𝜋r = 2 × 𝜋 × 0.7 = 2 × 22/7 × 0.7 = 2 × 22 × 0.1 = 4.4 m Now, Number of revolutions = (𝑇𝑜𝑡𝑎𝑙 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒)/(𝐷𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑐𝑜𝑣𝑒𝑟𝑒𝑑 𝑖𝑛 1 𝑟𝑒𝑣𝑜𝑙𝑢𝑡𝑖𝑜𝑛) = 2 × 𝜋 × 0.7 = 176/(44/10) = (176 × 10)/44 = 40 So, the correct answer is (d)

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo

Class 6

Class 7

Class 8

Class 9

Class 10

Class 11

Class 12

Courses

Interesting

Popular