draw the ray diagram of concave mirror of focal length 10cm when the object is kept at a 10 cm and write its nature of image and where it forms
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concave mirror
u=-20
f=-10
1/f=1/v+1/u
1/-10=1/v+1/-20
1/v=1/20-1/10
1/v=1-2/20
1/v=-1/20
v=-20
image is formed 20cm from the pole in front of the lens
nature:
m=-v/u
=-(-20)/-20
=-1
so the image is real, inverted and same size image
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