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?

The capital of Sweden is

Who wrote the book ­ "The test of my life"?

Who is the most prominent god of 'Rig Veda'?

$$\begin{gathered} ∆ABC is similar to ∆PQR. If ratio of perimeters of ∆ABC and ∆PQR is 1:2 and \\ if PQ = 10 cm then what is the length of AB (in cm)? \end{gathered}$$

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.

P: This is despite the fact that there is a rampant migration of rural families to urban centres.
Q: Generally the gains of being a unit of the urban population are less than the disadvantages and risks that are inbuilt in the urban life.
R: Rural population still dominates the urban population as far as the number is considered.
S: India is a country of villages.

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

Which process usually requires water?