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Jungle animals Elephant Lion Giraffe Rhinoceros Tiger  .....

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In physics, gravity (from Latin gravitas 'weight' ) is a fundamental interaction which causes mutual attraction between all things with mass or .....

Width of slit d) = 0.01 mm = 10-5 m Distance between slit and screen d) = 3.5 m Wavelength of light used (λ) = 500 nm = 500 × 10-9 m Width of central diffraction peak (x) = ? The width of centeral diffraction peak is given .....

N = 500 lines/mm = 500 × 103 lines/m Wavelength (λ) = 600 nm = 600 × 10-9 m For highest order of diffraction, θ = 90⁰ ∴ dsin90⁰ = nλ \(or, n =\frac{d}{λ} .....

1st part: A diffraction grafring is an arrangement of identical, equally-spaced diffracting elements. Normally, it consists of a large number of parallel lines of equal with ruled on glass (a transmission grating) or metal (a reflecting grafting). .....

Wavelength of sodium, light, λ = 589.3 nm = 589.3 × 10-9 m The first order spectrum occurs at an angle \(θ=\frac{1}{2}×27⁰42' \)                 .....

S is a narrow slit illuminated by monochromatic light. The spherical wavefront XY orginating from S is made a plane wavefront by the lens L1. The plane wavefront passes through the slit AB and is incident on the lens L2. The secondary disturbance .....

The diffraction gratings are used to produce spectra and for measuring wavelength. The spectrum produced in the fine gratings is very sharp Furthermore, a two-slit steup, for measuring the wavelength of light, produces interference fringes and is .....

We know that the velocity of light in denser medium (water) is less than that in rarer medium (air). So, wavelength of light is less in water than in air. In diffraction, width of centeral bright maximum is directly proportional to wavelength of .....

For diffraction to take place, the size of the obstacle should be of the order of the wavelength of the waves. Since the wavelength of light (≈ 10-6m) is very small as compared to the size of the obstacle around us, light cannot be diffracted .....

In Fresnel diffraction (far-field diffraction), the light sources are assumed to be very near the slit whereas in Fraunhofer (near-field diffraction), the light sources are assumed to be at infinity. In Fresnel diffraction, the waves are spherical .....

Given, λ = 6000A = 6000 × 10-10 m Grafting spacing d) \(=\frac{1}{400}mm=0.25×10^{-5}m\) For the first order maximum, dsinθ = λ .....

Here, n = 4 d = 0.03 cm D = 1.5m = 150 cm We know, \(y=\frac{nλD}{d} \) \(∴λ=\frac{yd}{nD}=\frac{1×0.03}{4×150}=5×10^{-7}m \)  .....

Here, Seperation of four bright fringes, (y4) = 2.5 mm = 2.5 × 10-3 m Wavelength of light used (λ) = 6.27 × 10-7 m Distance between the slits and screen (d) = 0.80 m Seperation of two slits (d) = ? Now, distance of .....

The phenomenon of non-uniform distribution of energy in the medium due to superposition of two light waves of same wavelength and nearly same amplitude is called interference of light. For producing sustained interference, two coherent sources that .....

In the given figure, S1 and S2 behave as coherent sources. The distance between slits and screen D, is very much greater than the slit separation 'd'. P is a point on the screen. In △S1PA, we have, .....

β = 1 mm = 1 × 10-3 m D = 2m d = 1mm =  1 × 10-3 m λ = ? \(As,β=\frac{λD}{d} \) .....