Which among the following is false about alpha particles?
1). They have high ionizing power
2). They have high penetrating power
3). They have high kinetic energy
4). They are positively charged helium nuclei
1. Why two thin shirts can keep us warmer than a single thick shirt in winter ?
2. Mud houses are cooler in summers and warmer in winters as compared to brick houses because
3. Which law relates to the ideal gas law?
4. Rain drops fall from great height. Which among the following statements is true regarding it?
5. A decibel is
6. In a photocell light energy is converted into