Question
In 90 litres of a mixture (milk + water), ratio of
quantity of milk to that of water in a mixture is 7:3, respectively. (5x + 10) litres of milk and 33 litres of water is added to the mixture such that the quantity of milk in the resultant mixture is 40% more than that of water in it. Find the value of ‘x’.Solution
Initially, Quantity of milk in the mixture = 90 × (7/10) = 63 litres Quantity of water in the mixture = 90 – 63 = 27 litres According to the question, 1.40 × (27 + 33) = 63 + 5x + 10 => 84 = 73 + 5x => x = 2.2
A 100 μF capacitor is charged to a voltage of 50V. How much energy is stored in the capacitor?
What is the unit of the refractive index?
The mass and energy equivalent to 1 a.m.u. respectively are -
Which type of mirror is used in car headlights?
The electric and magnetic fields of an electromagnetic wave are _____________
Which law states that the total current entering a junction is equal to the total current leaving the junction?
A solid non-conducting sphere of radius R carries a uniform volume charge density ρ. What is the ratio of electric field at r = R (surface) to that at ...
Compared to fresh Water, the freezing point of sea water is -
Water flows in a horizontal pipe of non-uniform area of cross-section at a pressure difference of 1.6 cm of mercury. If the velocity of water at the la...
The refractive index of glass is 1.5. What is the speed of light in glass?
(Speed of light in vacuum is 3.0 ×108 m s-1)
