A 14 year old student is not able to see clearly the questions written on a blackboard placed at a distance of 5 m from him.
Name the type of lens to correct this defect.

A 14 years old boy cannot read question written on the black-board lying 5 m away from him. Name the eye defect he is suffering from.

A 14 years old boy cannot read question written on the black-board lying 5 m away from him. Show with the help of a labelled diagram as to how this defect can be corrected.

A person can not see clearly objects beyond a distance of 1.2 m.Name the defect of vision he is suffering from.What would be the power of correcting lens used to restore proper vision?

A person can see objects clearly, when they are farther than 12.5 m away What type of lens and what type of power will allow the person to see distant objects clearly ?

In these question, a statement of asertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Assertion:A normal human eye can clearly see all the objects beyond a certain minimum distance. Reason:The human eye has the capacity to adjust suitably the focal length of its lens to a certain extent.

In a potato race, a bucket is placed at the starting point, which is 5 m from the first potato, and the other potatoes are placed 3 m apart I a straight line. There are ten potatoes in the line (see Fig 5.6). A competitorstarts from the bucket, picks up the nearest potato, runs hack with it. drops it in the bucket runs back to pick up the next potato, runs in the bucket to drop it in, and she continues in the same way until all the potatoes are in the bucket. What is the total distance the competitor has to run?

In a potato race a bucket is placed at the starting point, which is 5 m from the first potato, and the other potatoes are placed 3 m apart in a straight line. There are ten potatoes in the line (see Fig.) Each competitor starts from the bucket, picks up the nearest potato, runs back with it, drops it in the bucket, runs back to pick up the next potato, runsto the bucket to drop it in, and the continues in the same way until all the potatoes are in the bucket. What is the total distance the competitor has to run ?