student sitting at the back bench in a class is not able to see what i

1.	student sitting at the back bench in a class is not able to see what is written on the blackboard. He however, sees it clearly when sitting on the front seat at an approximate distance of 1.5 m from the blackboard. Draw ray diagrams to illustrate the image formation of the blackboard when the is seated at the (i) back seat (ii) front seat.
Answer» ANSWER: (a) (i) FORMATION of image when the student is seated at the last desk. (II) Formation of image when the student is sitting at the front desk is shown below. (b) The student is suffering from myopia. His eye defect can be corrected by USING a concave lens of SUITABLE power as shown below.

student sitting at the back bench in a class is not able to see what is written on the blackboard. He however, sees it clearly when sitting on the front seat at an approximate distance of 1.5 m from the blackboard. Draw ray diagrams to illustrate the image formation of the blackboard when the is seated at the (i) back seat (ii) front seat.

Answer»

ANSWER:

(a) (i) FORMATION of image when the student is seated at the last desk.

(II) Formation of image when the student is sitting at the front desk is shown below.

(b) The student is suffering from myopia.

His eye defect can be corrected by USING a concave lens of SUITABLE power as shown below.

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