Question 14 (a) Half life of a certain radioactive material is 8 hours. Explain the hydrogen spectrum on the basis of Bohr's theory. What is the minimum energy that must be given to a H atom in ground state so that it can emit an Hγ line in Balmer series. byjus.com . Byjus Asked on June 8, 2016 in ... Other pigments, called accessory pigments, enhance the light-absorption capacity of the leaf by capturing a broader spectrum of blue and red wavelengths, along with yellow and orange wavelengths. When light from a hydrogen gas discharge tube is passed through a prism, the light is split into four visible lines. Also find the wavelength of the first member of Lyman series in the same spectrum. Q10. They are made possible by enterprising people with innovative ideas. We understand the basis for this term. From IIT to Harvard and now BYJU’S, Tannishtha Sanyal is charting her own course. energy levels, hydrogen spectrum. Naturally occurring boron consists of two isotopes whose atomic weights are 10.01 and 11.01. ... two electrons from the electron transport chain combine with a hydrogen ion and NADP+ to form NADPH. 9. (ii) Filament temperature is increased. Two thin convex lenses of focal length f₁ and f₂ are placed in contact: a. The second term, due to Spin-Orbit interactions, is harder to derive correctly. If the object is at principal axis, draw Ray diagram of the image formation by this ... Name the different series of line observed in a hydrogen spectrum (b) Draw energy level diagram of hydrogen atom . Like all the fine structure corrections, this is down by a factor of order from the Hydrogen binding energy. Mention its nuclear reaction which takes place in a nuclear reactor? (b) State the effect of the following changes on the X-rays emitted by Coolidge X-ray tube: (2) (i) High voltage between cathode and anode is increased. The magnetic moment from the electron's spin interacts with the B field produced by the current seen in the electron's rest frame from the circulating proton. Figure 2. The decade witnessed numerous inventors patenting various forms of electric bulbs.Among them was the most influential carbon-thread incandescent lamp invented by American inventor Thomas Edison and Sir Joseph Swann of England.In 1879, Edison set out to invent the long … https://byjus.com . Calculate the radius of a … Balmer series of hydrogen spectrum. Title: Karnataka Board 2nd PUC Physics Model Paper- Set 1 Author: BYJU'S Subject: Physics Give principle used in the distillation technique. Each of these spectral lines corresponds to a different electron transition from a higher energy state to a lower energy state. Section-B (2 marks each) Q6. Hydrogen Fine Structure When the familiar red spectral line of the hydrogen spectrum is examined at very high resolution, it is found to be a closely-spaced doublet. With the advancement of electric current began an era of fast progress in scientific pursuits. 6. Q5. The atomic weight of natural boron is 10.81. The 1870s. Calculate the frequency associated with a photon of energy 3.3 × 10–20 J. Q11. Symbol of a diode is given below: a. The Figure below shows the atomic emission spectrum of hydrogen. Q9. Great inventions don’t happen overnight. Name the region of electromagnetic spectrum to which the Balmer series of hydrogen ... byjus.com . Chapter–13: Nuclei Composition and size of nucleus, Radioactivity, alpha, beta and gamma particles/rays and their properties; radioactive decay law, half life and mean life. Frequency of any line in the series on the spectrum of hydrogen is expressed as the difference between the two atoms fcm = cRZ2[1/(n+p)2 – 1/n2] where m = n + p Substituting for p we get, fcm = (2cRZ2/n3)p 12.23. Define a nuclear fission reaction. https://byjus.com KARNATAKA BOARD 2ND PUC MODEL PAPER ... in the hydrogen spectrum is 6563 Å. 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