Questions

Due to an acceleration of 1 m/s2 the velocity of a body increases from 15 m/s to 20 m/s in a certain period. Find the displacement (in m) of the body in that period.

An echo is returned in 3 s. What is the distance of the reflecting surface from the source, considering the speed of sound as 342 ms-1?

_____________ is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration.

Which of the following fuels causes minimum environmental pollution?

A rectangle with one side 4 cm is inscribed in a circle of radius 2.5 cm. The area of the rectangle in sq.cm is:

The length of a chord which is at a distance of 5cm from the centre of a circle of radius 13cm is

If 3P/7 = 4Q/11, then what is the ratio of P and Q respectively?

Find the odd word/letters/number from the given alternatives