Question Answers

1. Which of the following numbers are not perfect cubes? (iv) 100 1. Which of the following numbers are not perfect cubes? (iv) 100 October 11, 2020 Category: Chapter 6 - Squares and Square Roots , Maths , NCERT Class 8 ,

1. Which of the following numbers are not perfect cubes? (iii) 1000 1. Which of the following numbers are not perfect cubes? (iii) 1000 October 11, 2020 Category: Chapter 6 - Squares and Square Roots , Maths , NCERT Class 8 ,

The angle of contact between glass and water is 0∘ and water (surface tension 70 dyn/cm) rises in a glass capillary up to 6cm. Another liquid of surface tension 140 dyn/cm, angle of contact 60∘ and relative density 2 will rise in the same capillary up to angle of contact 60∘ and relative density 2 [...]

1. Which of the following numbers are not perfect cubes? (ii) 128 1. Which of the following numbers are not perfect cubes? (ii) 128 October 11, 2020 Category: Chapter 6 - Squares and Square Roots , Maths , NCERT Class 8 ,

1. Which of the following numbers are not perfect cubes? (i) 216 1. Which of the following numbers are not perfect cubes? (i) 216 October 11, 2020 Category: Chapter 6 - Squares and Square Roots , Maths , NCERT Class 8 ,

9. How many numbers lie between squares of the following numbers? i. 12 and 13 ii. 25 and 26 iii. 99 and 100 9. How many numbers lie between squares of the following numbers? i. 12 and 13 ii. 25 and 26 iii. 99 and 100 October 11, 2020 Category: Chapter 6 - Squares and [...]

8. (ii) Express 121 as the sum of 11 odd numbers. Solution: 8. (ii) Express 121 as the sum of 11 odd numbers. Solution: October 11, 2020 Category: Chapter 6 - Squares and Square Roots , Maths , NCERT Class 8 ,

8. (i) Express 49 as the sum of 7 odd numbers. 8. (i) Express 49 as the sum of 7 odd numbers. October 11, 2020 Category: Chapter 6 - Squares and Square Roots , Maths , NCERT Class 8 ,

A film of soap solution is trapped between a vertical frame and a light wire ab of length 0.1 m. If g = 10 m/s ^ 2 , then the load W that should be suspended from the wire to keep it in equilibrium is A film of soap solution is trapped between a vertical [...]

7. Without adding, find the sum. i. 1 + 3 + 5 + 7 + 9 ii. 1 + 3 + 5 + 7 + 9 + I1 + 13 + 15 + 17 +19 iii. 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 [...]