A solar cooker has a rectangular light collection area of 80 cm X 125 cm. If sunlight of intensity 1.2 kW/m² is incident on its surface at an angle of 60 degrees with respect to the normal, calculate the power collected by the solar cooker.
Q: If the Kelvin temperature of an object is doubled, the amount of radiant energy emitted each second…
A:
Q: (b) What is the surface temperature of the star? 4274.3 X K (c) At what rate is energy emitted from…
A: b) The star’s surface temperature can be determined by Wein’s displacement law as, Here, T, b, and…
Q: many It take a photon to travel from the Sun to ne Earth? min (b) What is the energy in ev of a…
A: a) As we know that The distance between the earth and sun is d = 1.5×108km…
Q: A beam of neutrons (of mass 940 MeV/c² ) moves through a material whose refractive index is 1.3.…
A: Given data, Mass of neutron M=940 MeV/c2. Refractive index n = 1.3 Angle cosθ=150.
Q: (a) Calculate the wavelength of light in vacuum that has a frequency of 5.37 x 1015 Hz. nm (b) What…
A: a) wavelength of light, =?b) wavelength in carbon tetrachloride, =?c) Energy of photon, E=?
Q: The term P represents the irradiance of the beam of light emerging from a given sample. Calculate T,…
A: Given Data The irradiance of the beam light is represented by :P' Here, the diffrent values of P,…
Q: The total power radiated per unit area from a blackbody is 78.0 MW/m2. Find (a) the temperature of…
A: Power per unit area, P = 78 MW/m2
Q: The emergent intensity from a star's atmosphere is I1. Before the light from the star reaches the…
A: Here's a Detailed Explanation:1. Source Function: The source function ( S ) represents the amount of…
Q: A small hole in the wall of a cavity in an object of any kind behaves like a blackbody because any…
A: Given, Area of the hole in black body, A = 30 cm2 = 0.003 m2 Temperature of the black body, T =…
Q: The intensity of blackbody radiation peaks at a wavelength of 583 nm. (a) What is the temperature…
A: The wavelength of the radiation is 583 nm.
Q: 3.4. The threshold frequency for photoelectric emission in Copper is 1.1x 1015 Hz. Find the maximum…
A: To find the maximum kinetic energy of the photoelectrons emitted, we can use the photoelectric…
Q: (a) Assuming an object at room temperature (T = 25 °C) behaves like an ideal thermal emitter,…
A: according to the guidelines we are allowed to attempt only one question so. Given an object is at…
Q: Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV…
A: Given:- a) The photon has a frequency of f = 7.60 x 1017 Hz b) The Photon has a wavelength of λ =…
Q: (a) A certain X-ray photon has a wavelength of 18 nm. Calculate the frequency (υ) of this type of…
A:
Q: A black body has an area of 10.0 cm2 what is the power radiated when its temperature is 5000 K.
A: Power radiated by a black body is given by, P=σAeT4 Here σ is Stefan's constant, A is the surface…
Q: Alarm systems use the photoelectric effect. A beam of light strikes a piece of metal in the…
A:
Q: (a) a photon having a frequency of 3.40 x 1017 Hz 1.41e-31 Calculate the energy of a photon at the…
A: Given Data: The frequency of a photon is, f=3.40×1017 Hz The wavelength of a photon is, λ=8.20×102…
Q: The sun’s surface temperature is about 5800 K. (a) About how much electromagnetic wave energy does a…
A: Using black body radiation laws
Q: Find the frequency, period, and wavelength of a photon with energy 2.432 (10) ^ -23 J
A: GIVEN THAT photon; s energy 2.432 (10) -23 J Question ? Find the frequency, period, and wavelength…
Q: Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV…
A: Given data: Frequency (f) = 7.20×1017 Hz 1 eV = 1.60×10-19 J Required: The energy of the photon in…
Q: Suppose a hot object radiates with the twice the intensity as the sun on earth, i.e. 2600W/m2. What…
A:
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: Find the energy (in eV) of a photon with a frequency of 6.7 ✕ 1016 Hz.
A: Given: The frequency of the photon is ν = 6.7 x 1016 Hz The value of the Planck constant h = 6.626 x…
Q: When ultraviolet radiation of 9.5 X 10 14 Hz is incident on a metal sheet, photoelectrons are…
A:
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
- The figure below depicts spectral reflectance measurements for three different materials: a green leaf from a healthy plant, a sheet of shiny blue paper, and the palm of a human hand. The measurements are labeled 1 (black line), 2 (red line), and 3 (blue line). Match the measurements to the most appropriate material typeA light beam of wavelength λ= 500 nm, beam diameter 5 mm and intensity I is propagating in a medium. The absorption cross section of the medium is 2.3×10-19 cm-2 and upper-level lifetime is 10 µs. Calculate the power of the light beam that make the absorption coefficient of the medium (α) decays to 50% of its initial value (αo).Visible light falls into wavelength ranges of 400-700 nm, for which 1 m=1×109 nm The energy and wavelength of light are related by the equationE=hcλ where E is energy in Joules, h is Planck's constant ( 6.626×10−34 J-s ), c is the speed of light ( 2.998×108 m/s), and λ is the wavelength in m. If a visible light photon has a wavelength of 632.3 nm, what is the energy of the photon (in J)?
- 2. Suppose the downward irradiance at the top of a layer of an absorbing gas is 600 Wm2, the upward reflected radiation is 150 Wm-2, and the radiation emerging at the bottom of the layer is 200 Wm-² (a) What is the reflectance of the layer? (b) What is the transmittance of the layer? (c) How much radiation is absorbed in the layer (Wm-²)? (d) What is the absorptance of the layer?Humans are unable to convert radiant energy from the sun into stored energy that can be usedto do work. Plants, however, obtain their energy from photosynthesis – sunlight is used toconvert carbon dioxide and water into sugars (stored as an energy source) and oxygen.Consider a leaf with a surface area of 2.5 cm2. On a sunny day it might receive sunlight withan average power per unit area of 350 W/m2. Of this incident light, only about 40% is usefulfor photosynthesis. (a) If the process was perfectly efficient (i.e. all the useful radiation was converted tostored internal energy), calculate the increase in internal energy of the leaf in aperiod of one hour. (b) In practice, the overall efficiency of the process (percentage of energy storedrelative to the total incident energy reaching the surface of the leaf) is only about6%. Discuss, in relation to the First Law of Thermodynamics, what happens to theremaining energy?