10 Inter action of charges is called1. electric discharge2. lightening3. earthing4. electric charging
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09 Lightening occurs due to1. rain2. electric discharge3. wind4. tsunami
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08 It can protect buildings from the effects of lightening1. seismograph2. seismoscope3. gold leaf electroscope4. lightening conductors
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07 The instrument is called to approximate measure the intensity of earth quake is1. seismograph2. seismoscope3. gold leaf electroscope4. lightening conductors
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06 The destructive earthquakes have magnitudes higher than ..... on the Richter scale1. 3.02. 4.03. 7.04. 2.0
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05 When a glass rod is rubbed with a piece of silk cloth1. rod and the cloth acquire positive charge2. rod becomes positively charged while the cloth has a negative charge3. rod and the cloth both acquire negative charge4. rod becomes negatively charged while the cloth has a positive charge
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04 Which of the following cannot be changed easily by friction1. a plastic scale2. a copper rod3. a woolen cloth4. piece of wood
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03 The unlike charges1. repel each other2. attract each other3. no interaction takes place4. none of these
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02 The shaking of earth is called1. volcano2. tsunami3. earthquake4. all of these