Look at the activities listed below. Reson out whether or not work is done in the light of your understanding of the term work. Suma is swimming in a pond.

Look at the activites listed below. Reason out whether or not work is done in the light of your understanding of the term 'work'. (a) Suma is swimming in a pond. (b) A donkey is carrying a load on its back. (c ) A wind -mill is lifting water from a well. (d) A green plant is carrying out photosynthesis. (e ) An engine is pulling a train. (f) Food grains are getting drired in the Sun. (g) A saliboat is moving due to wind energy.

Look at the activities listed blew. Reson out whether or not work is done in the light of your understanding of the term 'work'. A wind-mill is lifting water from a well.

The following item consists of two statements, one labelled the Assertion (A) and the other labelled the Reason (R). You are to examine these two statements carefully and decide if the Assertion (A) and Reason (R) are individually true and if so, whether the reason is a correct explanation of the Assertion. Select your answer using the codes given below. Assertion (A) : The work done when the force and displacement are perpendicular to each other is zero. Reason (R) : the dot product vec(A). vec(B) vanishes, if the vector vec(A) and vec(B) are perpendicular.

The question given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question ? 15 men and 18 women together can complete a work in 10 days. How many days will it take 9 men and 14 women together to complete the same work? I. 30 men can complete the work in 13 days II. The amount of work done by a man in one day is 3/4 of the work done by a woman in one day.