A microscope is focused on an object at the bottom of a bucket. If liquid with refractive index $\frac{5}{3}$ is poured inside the bucket, then microscope have to be raised by $30$ cm to focus the object again. The height of the liquid in the bucket is :

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(4) $75$ cm

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A microscope is focused on an object at the bottom of a bucket. If liquid with refractive index $\frac{5}{3}$ is poured inside the bucket, then microscope have to be raised by $30$ cm to focus the object again. The height of the liquid in the bucket is :

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A microscope is focused on an object at the bottom of a bucket. If liquid with refractive index 53\frac{5}{3}35​ is poured inside the bucket, then microscope have to be raised by 303030 cm to focus the object again. The height of the liquid in the bucket is :

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A microscope is focused on an object at the bottom of a bucket. If liquid with refractive index $\frac{5}{3}$ is poured inside the bucket, then microscope have to be raised by $30$ cm to focus the object again. The height of the liquid in the bucket is :