info penting materi dan soal-soal fisika

  • Supermassive Black Hole

    This artist’s impression depicts a rapidly spinning supermassive black hole surrounded by an accretion disc. This thin disc of rotating material consists of the leftovers of a Sun-like star which was ripped apart by the tidal forces of the black hole. Shocks in the colliding debris as well as heat generated in accretion led to a burst of light, resembling a supernova explosion. Credit: ESO, ESA/Hubble, M. Kornmesser

  • Cold Intergalactic Rain

    The cosmic weather report, as illustrated in this artist’s concept, calls for condensing clouds of cold molecular gas around the Abell 2597 Brightest Cluster Galaxy. The clouds condense out of the hot, ionised gas that suffuses the space between the galaxies in this cluster. Credit: NRAO/AUI/NSF; Dana Berry/SkyWorks; ALMA (ESO/NAOJ/NRAO)

  • The Quasar 3C 279

    This is an artist’s impression of the quasar 3C 279. Astronomers connected the Atacama Pathfinder Experiment (APEX), in Chile, to the Submillimeter Array (SMA) in Hawaii, USA, and the Submillimeter Telescope (SMT) in Arizona, USA for the first time, to make the sharpest observations ever, of the centre of a distant galaxy, the bright quasar 3C 279. Credit: ESO/M. Kornmesser

  • An Active Galactic Nucleus

    Artist's impression of an active galaxy that has jets. The central engine is thought to be a supermassive black hole surrounded by an accretion disc and enshrouded in a dusty doughnut-shaped torus. The torus of dust and gas can be seen orbiting a flatter disc of swirling gas. Courtesy Aurore Simonnet, Sonoma State University. Credit: ESO

  • The Horsehead Nebula

    A reproduction of a composite colour image of the Horsehead Nebula and its immediate surroundings. It is based on three exposures in the visual part of the spectrum with the FORS2 multi-mode instrument at the 8.2-m KUEYEN telescope at Paranal. This image is available as a mounted image in the ESOshop. Credit: ESO

Showing posts with label Gelombang Elektromagnetik. Show all posts
Showing posts with label Gelombang Elektromagnetik. Show all posts

Chapter 03 Gelombang Elektromagnetik

Pembahasan soal no. 11
Urutan gelombang-gelombang elektromagnetik berikut ini dari yang panjang gelombangnya kecil ke besar adalah …
A. Sinar X, sinar ultraviolet, sinar inframerah, sinar cahaya tampak
B. cahaya tampak, sinar inframerah, sinar ultraviolet, sinar X
C. sinar inframerah, cahaya tampak, sinar ultraviolet, sinar X
D. sinar X, sinar ultraviolet, cahaya tampak, sinar inframerah
E. sinar X, sinar inframerah, cahaya tampak, sinar ultraviolet
Jawab : D
Pembahasan soal no. 12
Berikut ini merupakan urutan gelombang eelektromagnetik dari yang memiliki energi foton besar ke kecil adalah …
A. sinar gamma, sinar X, sinar inframerah
B. sinar X, sinar gamma, sinar ultraviolet
C. cahaya tampak, sinar ultraviolet, sinar X
D. sinar ultraviolet, sinar gamma, sinar X
E. sinar ultraviolet, sinar tampah, sinar X
Jawab : A
Pembahasan soal no. 13
Urutan sprektrum gelombang elektromagnetik yang benar untuk variasi frekuensi besar ke frekuensi kecil adalah :
A. Cahaya biru, hijau, sinar inframerah
B. Cahaya hijau, biru, sinar X, sinar gamma
C. Sinar inframerah, sinar ultraviolet, cahaya hijau, cahaya biru
D. Gelombang radar, cahaya hijau, biru, gelombang radio
E. Sinar X, sinar gamma, cahaya biru, cahaya hijau    
Jawab : A
Pembahasan soal no. 14
Sinar gamma, sinar inframerah dan sinar ultraviolet adalah gelombang elektromagnetik. Kecepatan sinar-sinar yang benar adalah …
A. sinar gamma mempunyai kecepatan paling besar
B. sinar ultraviolet mempunyai kecepatan paling kecil
C. sinar inframerah mempunyai kecepatan paling besar
E. sinar ultraviolet mempunyai kecepatan yang besarnya diantara kecepatan sinar gamma dan inframerah
E. ketiga sinar mempunyai kecepatan yang sama
Jawab : E (sprektrum gel.EM memiliki kecepatan cahaya sama)
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