↵Akshay, sitting in the last row in his class, could not see clearly the words written on the blackboard. When the teacher noticed it, he announced if any student sitting in the front row could volunteer to exchange his seat with Akshay. Salman immediately agreed to exchange his seat wit Akshay. He could now see the words written on the blackboard clearly. The teacher thought it fit to send the message to Akshay 's parents advising them to get his eyesight checked. Which defect of vision is Akshay suffering from ? Which type of lens is used to correct this defect? State the values displayed by the teacher and Salman. In your opinion, in what way an Akshay express his gratitude towards the teacher and Salman ?