Questions

Find the power of a convex lens if the image formed is at a distance of 10 cm from the lens when the object is placed on the other side of the lens at 40 cm from the optical centre?

Which one of the following statements is not correct?

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

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

Seeking to harm someone in return for a perceived injury

In the following question, out of the given four alternatives, select the one which is opposite in meaning of the given word.

Nascent

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

an axe to grind

Select the word with the correct spelling.

A solution contains 33 g of common salt in 320 g of water. Calculate the concentration in terms of mass, by mass percentage of the solution.