In a Newton's ring experiment, if the radius of the first dark ring is found to

In a Newton's ring experiment, if the radius of the first dark ring is found to be r, what is the radius of the second dark ring? (2020)

In a Newton's ring experiment, if the radius of the first dark ring is found to be r, what is the radius of the second dark ring? (2020)

Step 1: Understand that in a Newton's ring experiment, dark rings are formed due to interference of light.
Step 2: Know that the radius of the dark rings is related to their order number (1st, 2nd, etc.).
Step 3: The radius of the first dark ring is given as 'r'.
Step 4: The formula for the radius of the dark rings is proportional to the square root of the ring number.
Step 5: For the first dark ring (ring number 1), the radius is r.
Step 6: For the second dark ring (ring number 2), the radius can be calculated as: radius = k * sqrt(2), where k is a constant.
Step 7: Since the radius of the first dark ring is r, we can say that the radius of the second dark ring is 2r.

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