Questions

Charles Darwin, the famous evolutionist, proposed his theory in which one of his books ?

∆DEF is right angled at E. If m∠F = 45°, then find the value of (cosecD - 1/√3).

Koushik can do a piece of work in X days and Krishnu can do the same work in Y days. If they work together, then they can do the work in

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

From the early 1990s, salaries shot up and stock options (were introduced).

Equal day/night in both hemispheres is on ________.

_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.

Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain period. Find the displacement (in m) of the body in that period.

The value of universal gravitation constant (G) was determined by