An object 4cm high placedat a distance 40cm infront of concave
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f=-12 cm
u=-6cm
ho=4cm
by mirror formula
1/v+1/u=1/f
1/v=1/f-1/u
1/v=-1/12+1/6
1/v=1/12
v=12 cm
hence the object is behind the mirror i.e. virtual and erect
m=-v/u
m=-12/-6=+2
alo, m=hi/ho
2=hi/4cm
hi=8 cm
hence image is magnified i.e. 8cm high
HOPE it helps you and plsmark as brainlist
u=-6cm
ho=4cm
by mirror formula
1/v+1/u=1/f
1/v=1/f-1/u
1/v=-1/12+1/6
1/v=1/12
v=12 cm
hence the object is behind the mirror i.e. virtual and erect
m=-v/u
m=-12/-6=+2
alo, m=hi/ho
2=hi/4cm
hi=8 cm
hence image is magnified i.e. 8cm high
HOPE it helps you and plsmark as brainlist
hvgp:
pls mark as brainlist
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