A measure of how much flux (lumens) is emitted within a small conical angle in a particular direction from a light source (lamp) or luminaire
Q: How does the dispersion of light occurs? explain.
A:
Q: When the sun is directly overhead, it produces an illuminance of 105,000 lux on a horizontal surface…
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Q: As a result of his observations, Roemer concluded that eclipses of lo by Jupiter were delayed by…
A: Given, Average radius of earth R=147×106kmdelayed by =25.2 min=1512s
Q: and the Beast (under the SPOTLIGHT#2). What is the Luminous Flux (lumen) the lamp need to releases…
A: Given, Illuminance of spotlight 2 = 600 lu
Q: Which of the following is NOT TRUE about the speed of light? a. it is always the same, no matter…
A: Answer:- (a) it is always the same, no matter the medium. The speed of light is not true it is…
Q: aturn is 1.4*10 ^12 m from the sun. How long does it take light from the sun to reach Saturn?…
A: Given data: Distance (d) = 1.4×1012 m 1 min = 60 s Required: The time (t) taken by light to reach…
Q: ray of light ray of light 40° 40° A I T C 50° 40° ray of light ray of light 50° 50° B D 50° 40°
A: Given data: Ray diagrams of the reflection of light from a plane surface Required: Need to select…
Q: D A B E In the figure, which is the reflected ray? О а. В O b. A О с. D O d. C
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Q: The distance between A and B b The distance between A and D c The distance between midpoints D,…
A: Diffraction in double slit occurs when two coherent waves with constant or zero phase difference…
Q: From the data shown in the image, the value of Oc is:
A: given θt=300. n0 =1 n1 =1.49 where n0 and n1 are refractive index of media. according to snells…
Q: In which of the following is the magnitude of flux arranged in an increasing manner? I. ΕΙΙΑ II. ELÂ…
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Q: If you find that light travels 2.4m within a plastic rod in 11.5ns, what would the refractive index…
A:
Q: A bright light is at top of a bilding that is 4.75 m in height. A dog is 190 cm tall walking away…
A: This problem can be solved using basic formula of motion and Pythagoras equation
Q: A ray of light is incident on the surface of a block of zircon at an angle of 31.0° with respect to…
A: The expression of Snell’s law of refraction: Here, ni is the incident index, nr is the refracted…
Q: Which object is hotter? Object 1 at T = 30° Object 2 at T = 30° Object 3 at T = 30
A: Given: Object 1 at T1 = 30 ̊C Object 2 at T2 = 30 ̊ F Object 3 at T3 = 30 K
Q: The prism shown in the figure (Figure 1)has a refractive index of 1.54, and the angles A are 24.5°.…
A: Concept used: Refraction takes place. Snell's law is used.
Q: refle C D E In the figure, which is the angle of incidence? а. C b. D С. А d. B
A: Option b is the right answer The angle of incident is D
Q: Illuminated objects can be seen without luminous objects. a. True b. False
A: The objects that are capable to produce their own light is known as a luminous object.
Q: Examine the mechanisms that affect light propagation and transmission in a medium.
A: here we will discuss about properties of light ; we will find out the cause that affect light…
Q: A 750-candela light source (a source that gives off 750 lm of luminous flux in one direction) emits…
A: The illuminance can be represented as, Here, I and d represent the light’s intensity and surface’s…
Q: A light ray is traveling through air (n=1.00) at an angle of 65 degrees until it enters a fresh…
A: refractive index of air = 1 inicident angle = 65 degree refractive index of water = 1.33Using…
Q: Rømer calculated that the eclipses were observed 17 minutes earlier when Jupiter was in opposition…
A: When earth and Jupiter is in the position of opposition and conjunction then the Speed of light is…
Q: What is the speed of light ( km/s) in a medium with refractive index n = 1.3? Assume the speed of…
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Q: H 30° 40° F = 600 N 2)
A:
Q: Why is the x-component of the NW direction negative, but not its y-component?
A: Solution: Given: Why is the x-component of the NW direction negative, but not its y-component?…
Q: What is the speed of X-rays in vacuum?
A: Vibrating electric field sand magnetic fields together creates electromagnetic waves.
Q: A physics instructor grew up with a 3 second rule for lightning bolts, to allow estimation of the…
A: The speed of light is 3×108 m/s. Thus, when we see a lightning at a distance, its almost…
Q: Calculate the surface area of a black, body mairilained" at 300K,"radialing the at the rale of…
A: To find- Surface area of black body (A)=? Given- Temperature (T)=3000K σ=5.67×10-8 J/m2s K4 Heat…
Q: •57 A point source of light is 80.0 cm below the surface of a body of water. Find the diameter of…
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Q: 18. An electric field wave is described by the function E(x,t)-200 sin [(1.2875e7) x-(3.8599c15) t].…
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Q: What is the wavelength of the light waves reflected from an object has a frequency of 2.0 x 107…
A: Frequency of the object is f = 2.0 x 107 sec-1 Speed of the light is 3.0 x 108 m/s
Q: Indicate the region of the spectrum for each of the following wavelengths of light. 320 pm 560 nm
A: The electromagnetic spectrum is basically divided into seven regions namely: Gamma spectrum-X-rays…
Q: A carbon ion of mass 2.00×10-26 kg but of unknown charge is projected from point P moving to the…
A:
Q: When a light wave goes from a medium with one index of refraction into a medium with a different…
A: When light enters from one medium to another, the wavelength and velocity of the light changes…
Q: .• Two parallel plates are separated by a small distance as illustrated in vFig. 24.29. If the top…
A: Given, wavelength λ = 632.8 nm Separation distance t = ? Here, we use the concept of thin…
Q: When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is…
A: When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is…
Q: What is true of the sun? It attracts light waves passing nearby. It has no effect on light waves…
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Q: A light source that produces parallel light rays is referred to as a A/ source.
A: It is asked in the question that which type of light source produces parallel light rays. When the…
A measure of how much flux (lumens) is emitted within a small conical angle in a
particular direction from a light source (lamp) or luminaire
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