Class VIII

Two objects with unlike charges will ... 
  1. attract each other 
  2. repel each other 
  3. either attract or repel 
  4. neither attract nor repel 
Which scale is used to measure the magnitude of earth quake?
  1. Celsius
  2. Kelvin
  3. Richter
  4. Pascal
Device can which be used to test whether an object is carrying charge or not is known as ...
  1. Electroscope
  2. Microscope
  3. Periscope
  4. Telescope
Name the scientist who showed that lightning and the spark from your clothes are essentially the same phenomena ? 
  1. Thomas Alva Edison 
  2. Benjamin Fraklin 
  3. Franklin D . Roosevelt 
  4. Isaac Newton 
The charge acquired by a glass rod when it is rubbed with silk is considered as ...
  1. neutral
  2. either positive or negative
  3. positive
  4. negative
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