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PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoRead the assertion and reason carefully, and select the right answer:
1. Assertion (A) : Generally, lightning is seen earlier, and thunder is heard later.
Reason (R) : Speed of the light is more than the speed of sound.
Reason (R) : Speed of the light is more than the speed of sound.
2. Assertion (A) : Sound travels faster in gases than in solids.
Reason (R) : Solid posses a greater density than that of gases.
Reason (R) : Solid posses a greater density than that of gases.