Question

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Answer 1

Answer:

Here is ur answer ... Hope it helps!

Explanation:

Distance between man and chart = 3m

Distance between man and mirror = 2m

Therefore distance between chart and mirror = 3+2 = 5m

Now final image is formed on the mirror which is at a distance of 2m away from the man, therefore the chart as seen by the patient = 5+2 = 7m away

Answer 2

Answer:

For plane mirrors, the object distance (do) is equal to the image distance (di). That is, the image is the same distance behind the mirror as the object is in front of the mirror. If we stand a distance of 2 meters from a plane mirror, we must focus at a location 2 meters behind the mirror in order to view our image.

In this case, a chart of letters is kept 3 m behind the patient and is asked to see the letters on the image of chart formed in a plane mirror kept at distance 2m in front of her. Therefore, the total distance from the chart and the mirror is 3 m+2 m=5 m.

As the object distance and image distance are equal, the image is formed at a distance of 5 m behind the mirror. The patient is at a distance of 2m from the mirror.  

Hence, the total distance covered in viewing the image of the letters on the cart is 5 m+2 m = 7 m.