Grade 12th pass7 grade science
An optician, while testing the eyes of a patient, keeps a chart of letters 3m behind the patient and asks her to see the letters on the image of chart formed in a plane mirror kept at distance 2m in front of her. How far away is the chart seen by the patient?
An optician, while testing the eyes of a patient, keeps a chart of letters 3m behind the patient and asks her to see the letters on the image of chart formed in a plane mirror kept at distance 2m in front of her. How far away is the chart seen by the patient?
