Figure shows a small block suspended vertically using an ideal spring. Initially spring is in natural length nad the mass is 1 mm above the principal axis of a concave mirror whose focal length is 20cm. Given that mass m=10 grams, k=100N//m, g=10m//s^(2). the amplitude of the image of the block formed by concave mirror is A millimetres, find the integer value 'A'

Figure shows a small block suspended vertically using an ideal spring.

1.	Figure shows a small block suspended vertically using an ideal spring. Initially spring is in natural length nad the mass is 1 mm above the principal axis of a concave mirror whose focal length is 20cm. Given that mass m=10 grams, k=100N//m, g=10m//s^(2). the amplitude of the image of the block formed by concave mirror is A millimetres, find the integer value 'A'
Answer» SOLUTION :Amplitude of block `=(mg)/k=1mm` `1/v+(1/(-30))=(-1)/20` `impliesv=-60cm` Magnification `m=-v/u=-2` This, amplitude of image `=2MM`.

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