PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoCheck the assertion and reason then, choose the best option:
1) Assertion: When a glass rod is rubbed with a silk cloth, the glass rod acquires a positive charge, and silk becomes negative.
Reason: The glass rod loses electrons; it has a deficiency of electrons and hence acquires positive charge. But, the silk cloth has an excess of electrons. So, it becomes negatively charged.
2) Assertion: One should not use an umbrella while crossing an open field during a thunderstorm.
Reason: As the rod of the umbrella and its supporting wires are made up of plastics, it may affect the person who holds the umbrella.
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