Two light rods AB = a + b, CD = a – b are symmetrically lying on a horizontal plane. There are kept intact by two strings AC and BD. The perpendicular distance between the rods is 'a'. The length of AC is given by
a
b
√(a² – b²)
√(a² + b²)
For election to the Lok Sabha, a nomination paper can be filed by
Miscellaneous · Easy
In a month if the seventh day is three days earlier than Saturday,then the nineteenth day of the month will be a
Miscellaneous · Easy
Which among the following events happened earliest ?
Miscellaneous · Easy
An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
Miscellaneous · Easy