What is Luminance? Also give its formula.

Q: A sling shot with a spring constant of 150 N/m is loaded with a 0.030 kg rock and pulled back 0.40…

A:

Q: Without stratospheric ozone (O3), harmful solar radiation would cause gene alterations. Ozone forms…

A: Bond energy, EC-Cl = 339 kJ/molBond energy, EO-O = 498 kJ/molAvogadro's number, NA = 6.023×1023…

Q: You are working as a letter sorter in a U.S Post Office. Postal regulations require that employees'…

A:

Q: What color do purple and red make?

A: According to the traditional color theory, there are three primary colors that are, red, yellow, and…

Q: Define Huygens Principle.

A: Huygens principle was given by a Dutch Scientist, Christian Huygens which determines how and where…

Q: Why does a white piece of paper appear white in white light, red in red light, blue in blue light,…

A: A piece of paper that appears white in sunlight has the property of reflecting any color that is…

Q: Determine the equivalent capacitance of the combina- tion shown in Figure P26.75. Suggestion:…

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Q: Stars emit at a range of wavelengths. At which color is the Sun’s intensity highest? What about…

A: The energy of the radiation depends inversely to its wavelength and since the wavelength of the…

Q: xpressions  that satisfies Bragg’s

A: Bragg’s law:-  The angle of coherent vs incoherent scattering from either a crystal lattice is…

Q: can you please find one example of light as a particle or wave.

A: Basically light can travel with a speed of 3×10^8m/s However if take light as a particle than it…

Q: Why is red paint red?

A: Red ochre is a simple compound composed of iron and oxygen which gives the colour to the paint.

Q: When you light a match you see largely orange light; when you light a gas stove you see blue light.…

A: The color of the flame is related to the heat of the flame.

Q: 3) How bright will Pluto appear in reflected or scattered sun-light (total Flux received in W/m² )…

A: The radius of pluto is .The radius of sun is .The albedo of Pluto is 0.60The surface temperature of…

Q: Why can’t we see stars in the daytime?

A: The light-scattering properties of our atmosphere spread sunlight across the sky, hence Stars…

Q: Currin ulⅡwa 3 5 8 hi 2 fo

A: (a) The weight of the elevator is equal to the gravitational force on it. The given weight in the…

Q: Match the following spectra with the corresponding astronomical object.

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Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.