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The lower end of a capilliary tube is at a depth of 12 cm and water rises 3 cm in it. The mouth pressure required to blow an air bubble at the lower end will be x cm of water column, where x is
11
Oct
The lower end of a capilliary tube is at a depth of 12 cm and water rises 3 cm in it. The mouth pressure required to blow an air bubble at the lower end will be x cm of water column, where x is The lower end of a capilliary tube is at a depth [...]
6. Using the given pattern, find the missing numbers. 1^2 + 2^2 + 2^2 = 3^2 2^2 + 3^2 + 6^2 = 7^2 3^2 + 4^2 + 12^2 = 13^2 4^2 + 5^2 + _^2 = 21^2 5^2 + _^2 + 30^2 = 31^2 6^2 + 7^2 + _ ^2 = _ ^2
11
Oct
6. Using the given pattern, find the missing numbers. 1^2 + 2^2 + 2^2 = 3^2 2^2 + 3^2 + 6^2 = 7^2 3^2 + 4^2 + 12^2 = 13^2 4^2 + 5^2 + _^2 = 21^2 5^2 + _^2 + 30^2 = 31^2 6^2 + 7^2 + _ ^2 = _ ^2 6. Using [...]
A soap flim of surface tension 3 x 10^-2 formed in a rectangular frame can support a straw as shown in figure. If g = 10 m/s^2, the mass of the straw is
11
Oct
A soap flim of surface tension 3 x 10^-2 formed in a rectangular frame can support a straw as shown in figure. If g = 10 m/s^2, the mass of the straw is A soap flim of surface tension 3 x 10^-2 formed in a rectangular frame can support a straw as shown in figure. [...]
5. Observe the following pattern and supply the missing numbers. 11^2 = 121 101^2 = 10201 10101^2 = 102030201 1010101^2 = ……………………… …………^2 = 10203040504030201
11
Oct
5. Observe the following pattern and supply the missing numbers. 11^2 = 121 101^2 = 10201 10101^2 = 102030201 1010101^2 = ……………………… …………^2 = 10203040504030201 5. Observe the following pattern and supply the missing numbers. 11^2 = 121 101^2 = 10201 10101^2 = 102030201 1010101^2 = ……………………… …………^2 = 10203040504030201 October 11, 2020 Category: Chapter [...]
A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external diameter. It is supported horizontally from the pan of a balance, so that it comes in contact with the water in a glass vessel. If an extra 3.103 gf is required to pull it away from water, the surface tension of water is
11
Oct
A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external diameter. It is supported horizontally from the pan of a balance, so that it comes in contact with the water in a glass vessel. If an extra 3.103 gf is required to pull it away from water, the surface tension [...]
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A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external diameter. It is supported horizontally from the pan of a balance ,
so that it comes in contact with the water in a glass vessel. If an extra 3.103 gf is required to pull it away from water ,
the surface tension of water is: ,
12. Find the measure of ∠P and ∠S if SP || RQ ? in Fig 3.34. (If you find m∠R, is there more than one method to find m∠P?)
11
Oct
12. Find the measure of ∠P and ∠S if SP || RQ ? in Fig 3.34. (If you find m∠R, is there more than one method to find m∠P?) 12. Find the measure of ∠P and ∠S if SP || RQ ? in Fig 3.34. (If you find m∠R is there more than one method [...]
11. Find m∠C in Fig 3.33 if AB || DC ?
11
Oct
11. Find m∠C in Fig 3.33 if AB || DC ? 11. Find m∠C in Fig 3.33 if AB || DC ? October 11, 2020 Category: Chapter 3 - Understanding Quadrilaterals , Maths , NCERT Class 8 ,
Two glass plates are separated by water. If surface tension of water is 75 dyn/cm and the area of each plate wetted by water is 8 cm^2 and the distance between the plates is 0.12 mm, then the force applied to separate the two plates is
11
Oct
Two glass plates are separated by water. If surface tension of water is 75 dyn/cm and the area of each plate wetted by water is 8 cm^2 and the distance between the plates is 0.12 mm, then the force applied to separate the two plates is then the force applied to separate the two plates [...]
10. Explain how this figure is a trapezium. Which of its two sides are parallel? (Fig 3.32)
11
Oct
10. Explain how this figure is a trapezium. Which of its two sides are parallel? (Fig 3.32) 10. Explain how this figure is a trapezium. Which of its two sides are parallel? (Fig 3.32) October 11, 2020 Category: Chapter 3 - Understanding Quadrilaterals , Maths , NCERT Class 8 ,
9. In the above figure both RISK and CLUE are parallelograms. Find the value of x.
11
Oct
9. In the above figure both RISK and CLUE are parallelograms. Find the value of x. 9. In the above figure both RISK and CLUE are parallelograms. Find the value of x. October 11, 2020 Category: Chapter 3 - Understanding Quadrilaterals , Maths , NCERT Class 8 ,