Two thin convex lenses of focal length f₁ and f₂ are placed in contact: a. https://byjus.com . Calculate the frequency associated with a photon of energy 3.3 × 10–20 J. Q11. 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. Great inventions don’t happen overnight. ... two electrons from the electron transport chain combine with a hydrogen ion and NADP+ to form NADPH. Q5. From IIT to Harvard and now BYJU’S, Tannishtha Sanyal is charting her own course. They are made possible by enterprising people with innovative ideas. Mention its nuclear reaction which takes place in a nuclear reactor? When light from a hydrogen gas discharge tube is passed through a prism, the light is split into four visible lines. https://byjus.com KARNATAKA BOARD 2ND PUC MODEL PAPER ... in the hydrogen spectrum is 6563 Å. Symbol of a diode is given below: a. 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 … (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. Also find the wavelength of the first member of Lyman series in the same spectrum. Title: Karnataka Board 2nd PUC Physics Model Paper- Set 1 Author: BYJU'S Subject: Physics The atomic weight of natural boron is 10.81. 6. byjus.com . The 1870s. Like all the fine structure corrections, this is down by a factor of order from the Hydrogen binding energy. The Figure below shows the atomic emission spectrum of hydrogen. We understand the basis for this term. Explain the hydrogen spectrum on the basis of Bohr's theory. Calculate the radius of a … (ii) Filament temperature is increased. Name the region of electromagnetic spectrum to which the Balmer series of hydrogen ... byjus.com . This splitting is called fine structure and was one of the first experimental evidences for electron spin. 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. 9. 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. Give principle used in the distillation technique. With the advancement of electric current began an era of fast progress in scientific pursuits. The second term, due to Spin-Orbit interactions, is harder to derive correctly. Balmer series of hydrogen spectrum. Section-B (2 marks each) Q6. Define a nuclear fission reaction. energy levels, hydrogen spectrum. Q10. Figure 2. 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. Question 14 (a) Half life of a certain radioactive material is 8 hours. 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 . Each of these spectral lines corresponds to a different electron transition from a higher energy state to a lower energy state. 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. 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