A 5cm tall object is placed at a distance of 20cm from a concave mirror of focal length 30cm. Use mirror formula to determine the position and size of the image formed.
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5
here's your answer
we get magnified,virtual image
behind mirror
we get magnified,virtual image
behind mirror
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Answered by
6
Hey dear,
● Answer -
v = -60 cm
h2 = 15 cm
● Explanation -
# Given -
u = -20 cm
h1 = 5 cm
f = 30 cm
# Solution -
Using mirror formula,
1/f = 1/v - 1/u
1/30 = 1/v - 1/-20
v = -60 cm
Magnification by mirror is calculated by -
M = v/u = h2/h1
h2 = h1 × v / u
h2 = 5 × (-60) / (-20)
h2 = 15 cm
Therefore, Image of size 15 cm is formed 60 cm behind mirror.
Hope this helped...
● Answer -
v = -60 cm
h2 = 15 cm
● Explanation -
# Given -
u = -20 cm
h1 = 5 cm
f = 30 cm
# Solution -
Using mirror formula,
1/f = 1/v - 1/u
1/30 = 1/v - 1/-20
v = -60 cm
Magnification by mirror is calculated by -
M = v/u = h2/h1
h2 = h1 × v / u
h2 = 5 × (-60) / (-20)
h2 = 15 cm
Therefore, Image of size 15 cm is formed 60 cm behind mirror.
Hope this helped...
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