Questions

Where is the commercial capital of Sri Lanka?

Device used for the detection and measurement of all types of radiation (alpha, beta and gamma)

Sextant is an instrument used in which of the following ?

Who first determined the value of G (gravitational constant)?

To hear a distinct echo the time interval between the original sound and the reflected sound must be at least

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?

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".

I should (has to be) with them tonight.

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.