Sachin being tested for his eyesight by an optician, sits 3 m in front of a plane mirror and looks at the image of the chart of letters, which seems to be 7m in front of him. Where exactly is the chart of letters located?
A1 m behind him
B4 m behind him
C3 m behind him
D7 m behind him
how
Ans 2:
Class : Class 6
Sachin is being tested for his eyesight by an optician.Now, letâs read the given information carefully, and find out the position of Sachin.Sachin sits 3 m in front of a plane mirror, and looks at the image of the chart of letters, which seems to be 7 m in front of him.This means the distance between the mirror and the image of the chart is (7 m â 3 m = 4 m). If the image of the chart is 4 m behind the mirror, then the actual chart is placed 4 m in front of mirror.Now the chart is placed 4 m in front of the mirror, and Sachin is sitting 3 m in front of the mirror. That means the chart is placed (4 m â 3 m = 1 m) behind Sachin. Hence, the right answer is Option A.
Ans 5:
Class : Class 7
A as image is as far behind the mirror as Object is in front of it.
In this case Sachin is 3 m in front of the mirror and the object seems to be seven meters ahead.
As Sachin is 3 m in front of the mirror that means object is (7-3) = 4 m behind the mirror.
As image is as far behind the mirror as Object is in front of it, It means chart is 4 meters in front of the mirror.
( 4 - 3 ) = 1 m behind Sachin as Sachin is also in front of the mirror.
Hope that answers your question !
Ans 6:
Class : Class 6
Sachin is being tested for his eyesight by an optician.Now, letâs read the given information carefully, and find out the position of Sachin.Sachin sits 3 m in front of a plane mirror, and looks at the image of the chart of letters, which seems to be 7 m in front of him.This means the distance between the mirror and the image of the chart is (7 m â 3 m = 4 m). If the image of the chart is 4 m behind the mirror, then the actual chart is placed 4 m in front of mirror.Now the chart is placed 4 m in front of the mirror, and Sachin is sitting 3 m in front of the mirror. That means the chart is placed (4 m â 3 m = 1 m) behind Sachin. Hence, the right answer is Option A.