Questions

Sextant is an instrument used in which of the following ?

A Sonar of a ship sends sounds waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor.

What will be the force of attraction between two bodies weighing 20 kg and 50 kg, respectively, with a distance of 2 metre between them?

Which of the following errors are identified by the compiler?

In which system is the central government weakest?

Who is the author of the book titled 'The Gita for Children'?

If in a code GONE is written as ILPB then how may CRIB be written in that code?

Rakhi got engaged 10 years ago. Rakhi's present age is 5/3 of her age at the time of engagement. If the present age of Rakhi's mother is twice that ofpresent age of Rakhi, then what was her mother's age (in years) at the time of her engagement?