Questions

If the angle of incidence formed on a concave mirror at a point is 30 deg then the angle of reflection will be

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

Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?

Ultraviolet radiation in the stratosphere is absorbed by

Who was elected the President of All India Workers and Peasants Party in Calcutta in 1928?

In this section, each of the following sentences has a blank space and four words are given below it. select the word or group of words you consider most appropriate for the blank space and indicate your response on the Answer Sheet accordingly.

We should give everyone training in citizenship but we have ____________ this aspect till now.

The saliva in human beings contains which enzyme?

........... compound is used as a drying agent.