Question

An object 2cm high is place 30cm from a concave lense of focal length 10cm. Calculate the height of the image

Answer 1

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given:

ho= 2cm

u= -30cm

f= -10cm

hi=?

solution:

1/f = 1/v-1/u

1/-10= 1/v-(-1/-30)

1/30 - 1/10 = -1/v

v= 15 cm

m=hi/ho=v/u

hi=v.hi/u

hi=15*2/-30

hi= 30/-30

hi= -1

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HOPE IT HELPED

MARK BRAINLIEST