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Report | Reema merin roy asks : capillary tube of radius r is dipped in a liquid of density rho and surface tension T. if the angle of contact is theta, the pressure differencebetween the two surfaces in the beaker and the capillary is A)T/r costheta B)2T/rcostheta C)T/rcostheta D)2T/rcostheta |
Report | Anurag asks : Two steel sheets each of length a1 and breadth a2 are used to prepare the surfaces of two right circular cylinders-one having volume v1 and height a2 and other having volume v2 and height a1.Then, (a) v1=v2 (b) a1v1=a2v2 (c) a2v1=a1v2 (d) v1/a1=v2/a2 |
Report | Shivani shukla asks : SOLVE THIS RIDDLE in some situations, i oppose the motion in other situations, i facilitate the motion but, i always oppose the relative motion between two moving surfaces. put some lubricant, and i become small there make the moving surfaces rough i make the movement tough i may be - static, sliding or rolling but whenever two surfaces are in motion i am always there, tell me who i am ! |
Report | Mohit sarawagi asks : ยป Question Directions: A cube of 4 cm has been painted on its surfaces in such a way that two opposite surfaces have been painted blue and two adjacent surfaces have been painted red. Two remaining surfaces have been left unpainted. Now the cube is cut into smaller cubes of side 1cm each. How many cubes will have at least red colour on its surface? Choices A. 20 B. 22 C. 28 D. 32 |
Report | Rahul gupta asks : The density and radii of two planets are in the ratio of 4 : 1 and 1 : 2 respectively. The ratio of the acceleration due to gravity on their surfaces would be |
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