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The bulb does not glow in the setup shown in figure. List the possible reasons. Explain your answer. cbse-class8-physics-20151 AnswerName three liquids, which when tested in the manner shown in figure, may cause the magnetic needle to deflect. cbse-class8-physics-20151 AnswerTwo mirrors meet at right angles. A ray of light is incident on one at an angle of 30o as shown in figure. Draw the reflected ray from the second mirror. cbse-class8-physics-20151 Answer When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to . cbse-class8-physics-20151 AnswerList sources of noise pollution in your surroundings cbse-class8-physics-20151 AnswerYou are a member of the municipal body of your town. Make a list of measures that would help your town to ensure the supply of clean water to all its residents. cbse-class8-physics-20151 AnswerList three states in India where earthquakes are more likely to strike. cbse-class8-physics-20151 AnswerPaheli had heard that rain water is as good as distilled water. So, she collected some rain water in a clean glass tumbler and tested it using a tester. To her surprise, she found that the compass needle showed deflection. What could be the reasons? cbse-class8-physics-20151 AnswerPrepare a list of objects around you that are electroplated. cbse-class8-physics-20151 AnswerYour parents are going to buy a house. They have been offered one on the roadside and another three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer. cbse-class8-physics-20151 AnswerGive reasons why electric bulb fuses. NCERT SCIENCE CLASS 6TH CBSE 20171 AnswerGurmit wanted to perform Activity 16.8 using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teachers advice? cbse-class8-physics-20151 AnswerIn case of a fire, before the firemen use the water hoses, they shut off the main electrical supply for the area. Explain why they do this. cbse-class8-physics-20151 AnswerWhen the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason? cbse-class8-physics-20151 AnswerThe weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain. cbse-class8-physics-20151 AnswerIs it safe for the electrician to carry out electrical repairs outdoors during heavy downpour? Explain. cbse-class8-physics-20151 AnswerExplain why objects moving in fluids must have special shapes. cbse-class8-physics-20151 AnswerExplain why a charged body loses its charge if we touch it with our hand. cbse-class8-physics-20151 AnswerSometimes, a crackling sound is heard while taking off a sweater during winters. Explain. cbse-class8-physics-20151 AnswerSketch larynx and explain its function in your own words. cbse-class8-physics-20151 Answer