Question
What is the ratio whose terms differ by 25 and the
measure of which is 2/7?Solution
Let the ratio be x : (x + 25). Then, => x/(x + 25) = 2/7 => 7x = 2x + 50 => x = 10 ∴  Required ratio = 10:35 = 2:7
Noise is measured in –
A thin converging lens of focal length 20 cm is placed at the origin. An object is placed at x = –30 cm. A plane mirror is placed at x = +40 cm. The ...
A myopic person has a power of 1.25 dioptre, what is the local length and nature of his lens?Â
Consider the reaction-
Copper sulphate solution (blue) + Iron → Iron sulphate soluton + Copper What is the colour of the iron sulphate solution?
A rod of length 2 m expands by 2 mm when heated. If coefficient of linear expansion is 1 x 10-5 / 0C, find temperature change.
Which among the following are unisexual flowers?
What is the name of China's recently launched largest amphibious assault vessel?
Which of the following is a physical change?
Biogas which is used for cooking purpose is a mixture of which of the following two components?
