Question (i) Short Quiz XESTI04-2010) 10) WhatzChapter%203.pdf1 / 2100%田の1. In the spectral distribution of blackbody radiation, the wavelength maximum atwhich the intensity reaches its maximum value decreases as the temperatureis increased, ininverse proportional to the temperature: 1 x1/T. This is called the Wein's"maxdisplacement law. The proportional constant is experimentally determined to be2T= 2.898 x10 m KDalam pengedaran spectrum sinaran hitam, panjang gelombang maksimum di manakeamatan mencapai nilai maksimum berkurang apabila suhu meningkat, dalamsongsang berkadaran dengan suhu o 1/T. Ini dipanggil undang-undanganjakan Wein. Peratusan berkadar adalah ditentukan 1 T= 2.898 x 10'm K secaramaxIeksperimen.(i)Calculate the wavelength of the object at room-temperature (T 20°C) whichemits the maximum thermal radiation?Kirakan panjang gelombang objek pada suhu bilik (Tmemancarkan sinaran terma maksimum?Calculate the temperature that the object must be heated until its peak thermalradiation is in the red region (i.e. 650 nm) of the spectrum?Kira suhu yang objek mesti dipanaskan sehingga radiasi haba puncak beradadi kawasan merah (iaitu 650 nm) spektrum?20°C) yang(ii)(40/100)2. a) The work function for tungsten metal is 4.53 eV. Calculate,Fungsi kerja untuk logam tungsten adalah 4.53 eV. Hitung.the cut-off wavelength for tungsten?panjang gelombang pemotongan untuk tungsten?(i)hp

Question (i) Given- Room temperature T=200C=20+273=293 K

Answered: uestion (i)

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uestion (i)

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter3: The Quantum Theroy Of Light

Section: Chapter Questions

Problem 5P

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Question

Question (i)

Short Quiz X
ESTI04-20
10) 10) Whatz
Chapter%203.pdf
1 / 2
100%
田の
1. In the spectral distribution of blackbody radiation, the wavelength maximum at
which the intensity reaches its maximum value decreases as the temperature
is increased, in
inverse proportional to the temperature: 1 x1/T. This is called the Wein's
"max
displacement law. The proportional constant is experimentally determined to be
2T= 2.898 x10 m K
Dalam pengedaran spectrum sinaran hitam, panjang gelombang maksimum di mana
keamatan mencapai nilai maksimum berkurang apabila suhu meningkat, dalam
songsang berkadaran dengan suhu o 1/T. Ini dipanggil undang-undang
anjakan Wein. Peratusan berkadar adalah ditentukan 1 T= 2.898 x 10'm K secara
max
I
eksperimen.
(i)
Calculate the wavelength of the object at room-temperature (T 20°C) which
emits the maximum thermal radiation?
Kirakan panjang gelombang objek pada suhu bilik (T
memancarkan sinaran terma maksimum?
Calculate the temperature that the object must be heated until its peak thermal
radiation is in the red region (i.e. 650 nm) of the spectrum?
Kira suhu yang objek mesti dipanaskan sehingga radiasi haba puncak berada
di kawasan merah (iaitu 650 nm) spektrum?
20°C) yang
(ii)
(40/100)
2. a) The work function for tungsten metal is 4.53 eV. Calculate,
Fungsi kerja untuk logam tungsten adalah 4.53 eV. Hitung.
the cut-off wavelength for tungsten?
panjang gelombang pemotongan untuk tungsten?
(i)
hp

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