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Light usually refers to visible light, which is electromagnetic radiation that is visible to the human eye and is responsible for the sense of sight.Read

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(i)A concave mirror produces 3 times magnified real image of an object at 10 cm in front of it.Where is image located
(ii)If a concave mirror has a focal length of 10 cm find the 2 positions where an object can be placed to give image twice height of object.
(iii)An object is placed at a distance of 12 cm from a cancave mirror The image formed is real and 4 times lapger than the object.Caliculate distance of image from the mirror.
please answer all questions with detailed explanations
there are 3 formulas - 1/v+1/u=1/f. R=2f. m=-v/u. please apply them.
you are asking questions of the same type - they are easy. try them.
ok sir but i am not sure of answers
please reply



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1.  m = -3 = -v/u  =>  v = 3 u  = -30 cm    as u = - 10cm 

2. f = -10cm     
     v = 2u  =>  1/2u+ 1/u = -1/10    =>  u = - 15 cm    v= - 30 cm
     v = -2 u  =>  -1/2u +1/u = -1/10  =>  u = -5 cm

       u = -12cm      m = -4 = - v/u      v = 4u = -48 cm
          -1/48 -1/12 = 1/f  =>  f = - 48/5 cm
3 5 3
ftre is coming sir so i have to solve these can you please help me ou
please reply quickly
sir are you there rigth now
sir please reply
i would be thankful to you
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