Questions

A covex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be :

A   parallel-plate   capacitor,with   air   in between  the  plates,  has  capacitance  C. Now  the  space  between  the  two  plates  of the  capacitor  is  filled  with  a  dielectric  of dielectric constant 7. Then the value of the capacitance will become

___________ is the most ecologically relevant environmental factor.

Equs Asinus is the scientific name of

Sound can not travel in which of the following medium?

Which of the following language is used to access data from a database?

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.
Mother shall return _____ an hour.