ATOMIC AND PROBELEM SOLVING

Posted: April 29, 2011 in MASHUDI

PROBLEM SOLVING :

1). electron have Mass to 9,0 x 10-31 singk make a move with the speed 2,2 x 107 m.s-1 ( tetapan Planck = 6,6 x 10‑34 Js) owning wavelength of de Broglie of equal to.

  1. 3,3 x 10-11 m
  2. 4,5 x 10-11 m
  3. 5,2 x10-11 m
  4. 6,7 x 10-11 m
  5. 8,0 x 10-11 m

2). Result of electron mechanism in atom which can make a move the trajectory by permeating or free of energi in the form of light photon referred as…

Spektrum garis

  1. a. Misteri Efek Zeeman
  2. b. Deret Balmer
  3. Deret Lyman
  4. Deret Paschen

3). Atom is smallest shares from a[n Iihat vitamin or items which cannot be redistributed the. Above statement opened by…

  1. Thomson
  2. Democritus
  3. Rutherford
  4. Thomson
  5. Niels Bohr

4). Atomic structure by expressing that atom consisted of by the pregnant positive items bermuatan of electron in it. This imaginable like cake cookies scattered by the currant. Above statement represent the atom model of according to…

  1. Thomson
    1. Democritus
    2. Rutherford
      1. Thomson

5). Electron rotate to encircle the atomic nucleus in trajectory or orbit , representing atom model of according to…

  1. Thomson
  2. Democritus
  3. Rutherford
  4. Thomson
  5. Niels Bohr

6). Filament a fluorescant lamp own wide of surface 20 cm2 and have temperature to 1000 K. Known by the filament emissivity 0,5. Whether/What the energy radiasi lamp?

  1. 76,9 W
  2. 64,2 W
  3. c. 56,7 W
  4. 27,7 W
  5. 45,6 W

7). A black body transmit the electromagnetic wave 5.800 at the time of maximum intensity radiasinya. If konstanta Wien = 2,9 x 10-3 , hence that object surface temperature [is]….

  1. 3747 ⁰C
  2. 2737 ⁰C
  3. 5767 ⁰C
  4. 6777 ⁰C
  5. e. 4727 C

8). Gammaray have the wavelength 0,1Type equation here. , counting momentum and its photon mass

  1. 2,2 . 10-31
  2. 2,2 . 10-30
  3. 2,2 . 1029
  4. 2,2 . 10-28
  5. 2,2 . 1027

9). If/When electron of atom hydrogen make a move from trajectory n = 3 to trajectory n = 2, hence will be transmitted [by] photon. If konstanta Rydberg = 1,097 x 107 m-1 hence photon wavelength transmitted [is].

A.6,6 x 10-7

B.6,6 x 10-8

C.6,6 x 10-9

  1. 6,6 x 10-10

10). If equation of single energy trajectory electron from a atom hydrogen [is] En = 13,6 / n^2 = eV hence a electron which excitation from trajectory n = 1 to n = 4 experiencing of change of energy electron [of] equal to…

a. 12,56 b.54 ,c. 32 d.76 e. 13,5

11.) A star located as far as travel 1 light year is detected temperature 2000 K and is considered a perfect black body. Calculate the total intensity produced by the star.
a. 9.2. 105 W/m2
b. 9.72. 105 W/m2
c. 9.7. 105 W/m2
d. 972. 105 W/m2
e. 9. 105 W/m2

12.) A star with a radius of 7107 m and emissivity 0.5 has a temperature of 4000 K. Meeting the energy rate is the star …
a. 7,276.106 W/m2
b. 7,256.106 W/m2
c. 7,2576.106 W/m2
d. 7,26.106 W/m2
e. 7,2.106 W/m2

13.) A star with a meeting 7,25.106 W/m2 energy rate and the star surface area 6.16 x 1016 m2. Radiation power of these stars are …
a. 4.66. 1023 W.
b. 4.466. 1013 W.
c. 4.46. 1023 W.
d. 4.466. 1023 W.
e. 4.6. 1023 W.

14.) An object has a minimum temperature of 27oC and 227oC maximum temperature. Value comparison of radiation emitted by objects at the maximum and minimum temperatures are …
a. 144: 49th c. 169: 64
b. 125: 49 d. 199: 55
e. 625: 81

15.) An object with an area of 100 cm2 surface temperature of 727oC. If the Stefan-Boltzmann coefficient of 5.67 x 10-8 W/mK4 and emissivity of the object is 0.6. The average rate of energy radiation such thing … joule / s
a. 201 c. 340.2 e. 411
b. 295.9 d.356
16.) Radiation power emitted by an object at a temperature of 227oC is 1200 J / s. If the body temperature rises up to 727oC, the radiation emitted now is …
a. 18,900 watts
b. 23,450 watts
c. 19,200 watts
d. 20,111 watts
e. 20,103 watts

17.) Surfaces at 37 ° C radiate electromagnetic waves. When constant Wien = 2.898 x 10-3 mK the maximum wavelength of the radiation surface are …..
a. 8.898 x 10-6 m
b. 9.348 x 10-6 m
C.11, 212 x 10-6 m
d. 9.752 x 10-6 m
e. 10.222 x 10-6 m

18.) Maximum radiation wavelength of an object at temperature T Kelvin is 6000 Å. If the body temperature rises up to a 3 / 2 T Kelvin, the wavelength of maximum radiation object is …
a. 500 Å b. 2000 c.4000 Å Å
d. 1000 Å e. 3000 Å

19.)Ukuran how much heat an object of radiation emission as compared with black body is called …
a. Wien constants
b. emissivity
c. black body
d. radiation power
e. frequency radiation

20. A star located as far as travel 1 light year is detected temperature 500 K and is considered the black body sempurna.Intensitas total generated is the star …
a. 38.35 x 102 W/m2
b. 28.5 x 102 W/m2
c. 35.43 x 102 W/m2
d. 38.3 x 102 W/m2
e. 28.35 x 102 W/m2
e. 3.975. 10-19 J

  1. )Radiation emitted by the sun has a maximum intensity at a wavelength of 4830 Å. Find the surface temperature of the sun…
    1. 400K
    2. 500K
    3. 600K
    4. 700K
    5. 800K
    6. Filaments of an incandescent lamp has a surface area of 20cm2and temperature 1000 K. Known emissivity filaments 0.5. Determine the radiation power of these lights….
      1. 16,7 W
      2. 26,7 W
      3. 36,7 W
      4. 46,7 W
      5. 56,7 W
      6. Hydrogen atoms at very high quantum numbers can be created in the laboratory and observed in space. Determine where the orbits of Bohr’s quantum number = 0.01 mm!
        1. 135
        2. 235
        3. 335
        4. 435
        5. 535
        6. The following statements that do not describe the quantum theory of Planck is…
          1. In one photon energy is E = h
          2. All photons are waves of electromagnetism
          3. Compton effect applying quantum theory of Planck
          4. The speed of photons equal to the speed of light
          5. Light consists of quantum – quantum
          6. Broglie wavelength of the ball with mass 0.5 kg moving with speed 20ms-1 is …

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