The condition for constructive interference in thin filmis,
m = 0,1,2,....
From equation (1) putting the value of t in the above equation we get,
since n = 1 for air film
or
For first bright ring, m = 0
For second bright ring, m = 1
For third bright ring, m = 2
Similarly, for Nth bright ring,
m = N - 1
Radius for dark ring
The condition for destructive interference in thin filmis,
2tn = mλ m = 0,1,2,....
By putting the value of t, we get,
For air n = 1
For i.e. point of contact.
if we use glass plate then ring's will be clear
Radius of rings is directly proportional to the square root of the radius of curvature. Thin lens would have larger radius of curvature and hence the option
An extended source is used in Newton's ring experiment to ensure uniform illumination across the entire surface of the plano-convex lens. This uniform illumination helps in producing a clear and distinct pattern of interference fringes, making it easier to measure the diameter of the rings accurately. Additionally, using an extended source reduces the effects of coherence length and ensures a consistent interference pattern, improving the reliability and precision of the experimental results.
when dust particles come in contect of plano convex lence.
newtons ring is formed due to the consequtive circle of different radius of bright and dark in which the centre is dark
An extended source is used in the Newton's ring experiment to ensure that the light incident on the glass plate is coherent and uniform. This helps to produce clear and sharp interference fringes, which are essential for accurate measurements of the radius of curvature of the lens and the wavelength of light.
The centre spot will be dark even when we use white source. As the radius of the ring is directly proportional to the square root of the wavelength, the violet being the shortest wavelength will come first and red will be the last as its wavelength is the longest in the visible region. Any how we cannot get sharp coloured rings around the black spot. Instead overlapping occurs and just multicoloured rings can be seen.
Newton's rings can be used to determine the wavelength of light because the diameter of the rings varies with the wavelength of the light being used. By measuring the diameter of the rings, the wavelength of the light can be calculated using the formula for constructive interference.
if we use glass plate then ring's will be clear
Any wavelength of light can be used. Natural light, the white light we receive from the Sun, is a mixture of waves with wavelengths between about 350 and 700 nm.
The ring stand holds an iron ring, or other support apparatus, depending on what the experiment calls for.
Radius of curvature in Newton's rings is the radius of the curvature of the wavefront at the point where interference fringes are observed. It is calculated by measuring the diameter of the nth dark ring and using the formula R = (n * λ * D) / (2 * δ), where R is the radius of curvature, n is the order of the ring, λ is the wavelength of light, D is the distance between the lens and the glass plate, and δ is the diameter of the nth dark ring.
dont know plz you tell me the answer in detail
which circumference of the basketball ring are you trying to calculate? 2d or 3d -"... 3d
The Spoony Experiment - 2008 The Ring Terror's Realm Part 1 5-11 was released on: USA: 1 November 2012
The Spoony Experiment - 2008 The Ring Terror's Realm Part 2 5-12 was released on: USA: 5 November 2012
To calculate the length of helical ring of pile, use the standard formula. The formula is pi D X the number of coils. "D" is the diameter of the coils.