Free tnpsc model questions Online Test - MeritNotes

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1. The geometric centre of the spherical surface of the mirror is called ___
 
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2. The material which do not conduct electric charges is
 
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3. The law of floatation was invented by
 
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4. Sound cannot travel through ____
 
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5. A stationary elevated object has
 
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6. In which one among the following is the speed of sound maximum?
 
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7. Which one of the following is used in measuring altitudes?
 
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8. Pin hole camera is used ____
 
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9. The Nobel Prize started Alfred Nobel, who had invented
 
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10. The unit of frequency is
 
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