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)
Practice Questions
1 question
Q1
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)
r
2r
√2r
r/2
The radius of the dark rings in Newton's rings is proportional to the square root of the ring number. Thus, the second dark ring will have a radius of 2r.
Questions & Step-by-step Solutions
1 item
Q
Q: 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)
Solution: The radius of the dark rings in Newton's rings is proportional to the square root of the ring number. Thus, the second dark ring will have a radius of 2r.
Steps: 7
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.
