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ATQ Quantity of milk in 450 ml of mixture = 450 × 15/(15 + y) Quantity of water in 450 ml of mixture = 450 × y/(y + 15) According to the question: {6750/(15 + y) + 80}/{450y/(y + 15) + 70} = 3/1 Or, 6750/(15 + y) + 80 = 1350y/(y + 15) + 210 Or, (6750 – 1350y)/(y + 15) = 70 Or, 6750 – 1350y = 70y + 1050 Or, 1420y = 5700 Or, y = 4
The distance between the focus and the centre of curvature of a spherical mirror in terms of the radius of curvature R, is equal to:
What will be the energy possessed by a stationary object of mass 10 kg placed at a height of 20 m above the ground? (Take g = 10 m/s^2)
The method of protecting iron from rusting, by coating a thin layer of Zinc is called -
Which of the following materials is most suitable for marking electromagnetic and core of transformer?
Which law states that the total current entering a junction is equal to the total current leaving the junction?
If an agent does a work 'W' in time 't', then the power is given by:__________.
What is the minimum escape velocity of rocket to be launched into space?
Why do starts twinkle in the sky?
What is the velocity of light in a diamond if the refractive index of diamond with respect to vacuum is 2.5?
The sharpness of a television image is termed as its –