PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo1. On what factors the pressure exerted by the liquid depends?
a. The pressure exerted by a liquid at a point is determined by its .
b. The density of the liquid is denoted by the letter .
2. Why does a helium balloon float in the air?
a. Helium gas is dense than air.
b. floats because its molecules are lighter than the nitrogen and oxygen.
3. Why it is easy to swim in river water than in seawater?
a. Seawater is than river water.
b. Upthrust is greater in sea water.
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