A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a 9.50-cm-long vertical metal rod that has its lower end rigidly fixed. The thin film of air between the rod and glass is observed to be bright by reflected light when it is illuminated by light of wavelength 525 nm. As the temperature is slowly increased by 27.0A????1C, the film changes from bright to dark and back to bright 200 times. What is the coefficient of linear expansion of the metal? .......A????1C-1 ?

Q: ¡Q-1 A student wants to compare the luminous flux of a lightbulb with that of a 2 =1750 (lm) lamp.…

A:

Q: At a wavelength 692 nm, the ordinary and extra-ordinary refractive indices in a uniaxial crystal are…

A: ordinary refractive index(no)=1.558 ordinary extraordinary refractive index(ne)=1.611 λ=692…

Q: It is intended to determine what type of white pigment has been used as a colorant in a…

A: Solution: Use the x ray diffraction relation. 2dsinθ=nλ…

Q: Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. Such…

A:

Q: Potassium chloride (KCL) crystal with a unit cell parameter of 6.3 A. The potassium and chlorine…

A:

Q: White light is incident normally on a diffraction grating with 300 lines/mm. The resulting…

A: The separation on the detector between the first-order diffracted lights of 656 nm and 486 nm…

Q: A spacer is cut from a playing card of thickness 2.82 ✕ 10−4 m and used to separate one end of two…

A: Given that the value of length and thickness and wavelength. Then We have to determine the value of…

Q: Building contractors often install double-glazed windows to prevent thermal energy (heat) from…

A:

Q: Tungsten is a very high density, high melting point, and hard metal. These properties are partially…

A: Tungsten structure is BCC with mass ;m=183.3u Length of side of BCC=0.3155nm We have to find density…

Q: Consider a ruby crystal of diameter 1cm and length 10cm. The refractive index is 1.78. The ends have…

A:

Q: The GPS network consists of 24 satellites, each of which makes two orbits around the earth per day.…

A:

Q: 1-The electric field in a vacuum is given as Ë = (2i – 3 + 3k)e«(10'2+2+10'y-at) V/m, Find the…

A: Given: The electric field in a vacuum is

Q: Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. Such…

A:

Q: A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a…

A: Given,  Length of the rod L=8.5 cm  wavelength λ=530 nm ∆T=21.5°C

Q: At 2200 degrees Celsius, the max wavelength for the Cs lamp is at 1252 nm. The measured spectral…

A: The spectral emissivity at the wavelength is     ελ,T=Lλ,TσT4 Where (Lλ,T is the spectral radiance…

Q: What average intensity does a GPS receiver on the ground, directly below the satellite, receive?…

A: Part(a) What average intensity does a GPS receiver on the ground, directly below the satellite,…

Q: Interference by a double slit With: - red diode laser λred = (650 ± 20)nm and green λgreen = (532 ±…

A:

Q: A thin uniform film of refractive index 1.750 is placed on a sheet of glass with a refractive index…

A:

Q: An engineer, investigating the behavior of radio waves, builds a box 7.20 m long. Inside the box at…

A: Given that: Length of box, l=7.20 m  Wavelength, Let minimum height required is h meter

Q: A beam of light polarized along the y axis and moving along the +z axis passes through two…

A: Note:- “Since you have asked multiple questions, we will solve the first question for you. If you…

Q: The plane z = 0 separates two media: glass(nglass = 1.51 for z 0). The optical beam of a…

A: This is a basic question from the wave vectors. This is related to the refraction and reflection of…

Q: Photons with a wavelength of 519 nm in air enter a plate of flint glass with index of refraction n =…

A: The wavelength of photon in air is 519 nm...….(given) Now, in order to find the wavelength of the…

Q: (a) Show that if the crystal undergoes volume expansion, then the reflected beam is rotated by…

A: (a) From Bragg's law  2Lsinθ=nλ where θ is the Bragg's angle.  When n=1,  2Lsinθ=λLsinθ=λ2…

Q: 2. A 50-cm tall fish tank is 3/4 full with oil and exposed to the air. A laser beam with a…

A:

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.