Questions

A Sonar of a ship sends sounds waves of speed 1600 m/s. These waves are reflected back by the ocean floor in 4 seconds. Find the depth (in m) of the ocean floor.

The color with the longest wavelength is

Due to incresed weapon launching missions of North Korea, which country has launched a spy satellite to monitor it?

Which among the given options is IBMs Supercomputer?

Which of the following is the operation executed on data stored in registers?

Which one among the following is not an electro­magnetic wave?

The ionosphere overlaps which two layers of the atmosphere?

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

The 1980s saw the introduction

A-of the gas lighter that we

B-commonly use now, which has

C-almost destroyed the match industry