When a convex lens produces a real image of an object, the minimum distance between the object and image is equal to
the focal length of the convex lens
twice the focal length of the convex lens
four times the focal length of the convex lens
one half of the focal length of the convex lens
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