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In a Young's experiment, the width of the fringes obtained with light of wavelength 6000 nm is 2.0 mm. What will the fringe width be if the entire apparatus is immersed in a liquid of refractive index of 1.3..
Question 17
Question: Pyloric valve is present in the _____________. 1. heart 2. liver 3. stomach 4. intestine Answer: 3..
Question 17
Question: A solar cell is made up of ______. 1. silicon 2. titanium 3. magnesium 4. teflon Answer: ..
Question 17
Question: The number of moles in 5 grams of calcium is _________. 1. 0.125 mole 2. 5 mole 3. 1.25 mole 4. 12.5 moles Answer: ..
Question 17
Question: The physical quantity, which is equal to rate of change of momentum, is 1. displacement 2. acceleration 3. force 4. impulse Answer: 3..
Question 17
Question: The weight of an object of mass 15 kg at the centre of the earth is _____. 1. 147 N 2. 147 kg 3. zero 4. 150 N Answer: 3..
Question 17
Question: An example of a chemical change is _____. 1. formation of clouds 2. glowing of an electric light 3. dropping sodium into water 4. dissolving of salt in water Answer: 3..
Question 17
Question: What is the SI unit of speed? 1. km/h 2. m/s 3. m/min 4. km/s Answer: ..
Question 17
Question: AIDS virus has_________. 1. single strand DNA 2. double strand DNA 3. single strand RNA 4. double strand RNA Answer: 3..
Question 17
Question: Breaking of lead bromide into lead and bromine is an example of __________. 1. decomposition reaction 2. synthesis reaction 3. displacement reaction 4. neutralisation reaction Answer: ..
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