A 3cm high object is placed at adistance of 40cm from a concave mirror.The image is real inverted and 4cm in size.find fical length of mirror and the position of image
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h=3cm u=-40cm h'=-4cm
h'/h=-v/u
-v=-4(-40)/3 = 160/3 = 53. 34cm
v=-53.34cm
Now,
1/f=1/v+1/u
1/f=-160/3+1/-40
=-160/3-1/40
=-640-3/120
=-637/120
=-5. 3cm
h'/h=-v/u
-v=-4(-40)/3 = 160/3 = 53. 34cm
v=-53.34cm
Now,
1/f=1/v+1/u
1/f=-160/3+1/-40
=-160/3-1/40
=-640-3/120
=-637/120
=-5. 3cm
miinion:
are u sure
it can only come but still confirm it
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