Question

list out the material required for the experiment to determine that the focal length of a convex lens depends upon the surrounding medium and write the experimental procedure​

Answer 1

Experiment to determine that focal length of a convex lens depends upon the surrounding medium

Step-by-step Explanation:

Apparatus required

• Convex lens whose focal length is known
• holder for lens
• Glass container
• Stone
• Water

Procedure

• Take a cylinder of height greater than lens and fill it with water
• Put a stone at the bottom of cylinder
• Now adjust the stone in cylinder with the help of holder ins such a way that its height is less than or equal to the focal length if lens
• Now see the stone through lens
• Now increase the height of lens till the image of stone is lost
• From this we conclude that , when the lens was adjusted in water at a focal length which was greater than its focal length in air, we were able to see the object. Which means focal length of lens has increased in water
• Thus, we can conclude that focal length of lens in medium dependent

Answer 2

Answer:

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