Intensity of sound at a point is ____ its distance from the source.
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Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open |
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Radio telescopes are better than optical telescopes because |
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Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit |
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Out of the following pairs, which one does not have identical dimension? |
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Mercury is commonly used as a thermometric fluid rather than water because |
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Optical fibre works on the |
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Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in |
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Supersonic plane fly with the speed |
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Mach number is used in connection with the speed of |
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On a stationary sail boat, air is blown from a fan attached to the boat. The boat |
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