If the power of lens is -0.25,then it's focpal length will be
a)-4m b)-4cm c)-400cm d)40cm
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If the power of lens is -0.25,then it's focpal length will be
a)-4m b)-4cm c)-400cm d)40cm
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Heya!!
Focal length(in m)= 1/power
Hence f= -1/0.25
f= -4m
Hope it helps ya:)
Answer:
c)-400cm
Explanation:
power of lens = 1/f(in metres)
-0.25=1/f
f= -1/0.25
f= -100/25
f= -4 metres or -400 cm.