Questions

The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

If a body slides over a surface, the force resisting the motion between them is called ______.

When did the first Huna invasion take place?

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?

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

to cut up (food, especially meat) into very small pieces

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Beggars can't be choosers

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Population decline, counter-urbanisation, invasion, and (1)/ movement of people, which had begun in Late (2)/ Antiquity, continued in the Early Middle Ages. (3)/ No error (4)

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

I have never solved ______ equation before.