plz do it fast , show the working
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1/v-1/u=1/f
1/(-10)-1/(-20)=1/f
1/(-20)=1/f
So, f=-20
As f is negative so it's concave lens
1/(-10)-1/(-20)=1/f
1/(-20)=1/f
So, f=-20
As f is negative so it's concave lens
abhi8460:
plz send the pic
what pic?
Also the image is real and inverted
the image is virtual as it is a concave LENS
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