SAMPLE PAPER-03 (unsolved) PHYSICS (Theory) Class – XII Time allowed: 3 hours Maximum Marks: 70 General Instructions: a) b) c) d) e) f) g) h) All questions are compulsory. Questions 1 to 5 are one mark questions. Questions 6 to 10 are two marks questions. Questions 11 to 22 are three marks questions. Question 23 is four marks question. Question 24 to 26 are five marks questions. There is no overall choice in the question paper‚ but internal choice is there. Use of calculator is not permitted.
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resources of RF interference may cause various stages of loss and gain. Therefore it is essential for one to understand the dB measurement to assist recognize the origin of interference.There are lots of things which may cause RF decrease for example refraction‚reflection‚ diffraction‚ scattering‚ absorption.Reflection can cause a signal to bounce back on itself and so augmenting the signal.That is why it is essential to use a dB measurement to assist find the issue and what iscreating it.From the studying
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Lunar eclipse [pic] [pic] The June 2011 total eclipse A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the Sun‚ Earth‚ and Moon are aligned (in "syzygy") exactly‚ or very closely so‚ with the Earth in the middle. Hence‚ a lunar eclipse can only occur the night of a full moon. The type and length of an eclipse depend upon the Moon’s location relative to its orbital nodes. Unlike a solar eclipse‚ which can only be viewed from
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methodology that we have used to investigate this topic is based on an experiment carried out by two scientists in 1850 that contributed to studies about total reflections. By using a laser‚ we could observe that the laser light is scattered due to refraction when water stream breaks. Taking into account this fact‚ we recorded videos and then analyzed them computationally. This phenomenon is considered to be very complex and they cannot be studied in the same way as other physical phenomenon. Our
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11th March 2012 To what extent can we trust our senses to tell us the truth? We perceive the world through our five senses: Sense perception is the active‚ selective and interpretative process of recording or becoming conscious of the external world. So can we really rely on our senses to tell us the truth? There are so many times when our senses can be influenced by instinct‚ emotion‚ and beliefs. For example‚ if we are in the middle of a forest and scared‚ we probably start to see
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Polytechnic University of the Philippines College of Engineering Computer Engineering Department A RESEARCH STUDY PLAN PROPOSAL Developing MCU – Based Nebulizer Castigo‚ Victor James Lopez‚ Verna Liza Mastrili‚ Jeremiah Pugay‚ Juan Paolo Ylaya‚ Analyn Engr. Julius S. Cansino Engr. Ronald Fernando Thesis Adviser Chapter I - The Problem and its Background Background of the Study Every individual varies. Each respires from different walks of life. Towards a particular something
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Methods To determine the principals of osmoregulation‚ we sampled two lobsters from each tank and there were three different tanks which the water ranged in salinity. The experiment is to determine whether the six lobsters tested are osmoregulators or osmoconformers‚ this is done by obtaining a sample of hemolymph. The first step of the lab is to prepare the needle and syringe that will be taking the hemolymph. The syringe size was 1 ml‚ and the intention is to collect between 0.5 and 1.0 ml
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Isaac Newton was a product of his time period. He was born in the midsts of the scientific revolution‚ a time when a strong emphasis was placed on learning and disciplines such as physics (Hatch‚ Robert A. "The Scientific Revolution"). Newton was strongly influenced by these scientific trends‚ as they would eventually become fields in which he specialized in. The movement started when Copernicus’s heliocentric viewpoint was first proposed‚ and ended with Newton’s death in the early 1700s (Hatch
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Chapter One Quick Check: 1. Cells were not discovered by Hippocrates because he didn’t have the technology and equipment to. 2. Robert Hooke is credited with the discovery of the basic building block of living organisms. 3. Robert Brown is credited with the discovery of the cell nucleus. 4. Schleiden and Schwann’s contribution to biology was proposing that cells are the basic structural unit for plants and animals. 5. Before Virchow‚ one idea was that living things could arise from non-living
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Lippershey‚ had produced an instrument by which the apparent size of remote objects was magnified‚ Galileo at once realized the principle by which such a result could alone be achieved‚ and‚ after a single night devoted to consideration of the laws of refraction‚ he succeeded in constructing a telescope which magnified three times‚ its magnifying power being soon increased to thirty-two. <br> <br>This instrument being provided and turned towards the heavens‚ the discoveries‚ which have made Galileo famous
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