✅ Some Important Questions Of Physics ✅
1. Why is it easier to burst a gas filled balloon with a needle than with a nail?
Ans. The needle exerts more pressure on the balloon than the nail.
2. The velocity of sound in wet air is greater than that of dry air because in moist air -
Ans. Density is less than that of dry air.
3. Why do we feel cool when we sit near the fan?
Ans. The air evaporates the sweat from our body.
4. At which place the force of gravity is greatest?
Ans. on pole line
5. It is difficult to hammer a nail into a freely hanging wooden structure. Which rule supports this statement?
Ans. Newton's third law
6. A soap bubble acquires a spherical shape due to -
Ans. surface tension
7. According to the second law of motion, acceleration for a given force is inversely proportional to the ……… of the object.
Ans. Mass
8. If the momentum of a body is doubled, the kinetic energy becomes ……….
Ans. four times
9. Kilowatt hour (kWh) is the unit of which of the following?
Ans. energy
10. Which one of the following properties of a proton does not change while moving freely in a magnetic field?
Ans. Speed
11. In what unit is noise measured?
Ans. Decibel
12. Under what condition is the easiest method to convert a gas into a liquid?
Ans. low temperature and high pressure
13. A mass of water is placed at 0°C. On heating to 10°C, its volume will be -
Ans. will increase after decrease
14. The temperature whose reading is equal on both the Fahrenheit and Celsius scale is -
Ans. –40°
15. On what does the pitch of sound depend?
Ans. frequency
#Physics
#General_knowledge
@Science_Study_Daily
1. Why is it easier to burst a gas filled balloon with a needle than with a nail?
Ans. The needle exerts more pressure on the balloon than the nail.
2. The velocity of sound in wet air is greater than that of dry air because in moist air -
Ans. Density is less than that of dry air.
3. Why do we feel cool when we sit near the fan?
Ans. The air evaporates the sweat from our body.
4. At which place the force of gravity is greatest?
Ans. on pole line
5. It is difficult to hammer a nail into a freely hanging wooden structure. Which rule supports this statement?
Ans. Newton's third law
6. A soap bubble acquires a spherical shape due to -
Ans. surface tension
7. According to the second law of motion, acceleration for a given force is inversely proportional to the ……… of the object.
Ans. Mass
8. If the momentum of a body is doubled, the kinetic energy becomes ……….
Ans. four times
9. Kilowatt hour (kWh) is the unit of which of the following?
Ans. energy
10. Which one of the following properties of a proton does not change while moving freely in a magnetic field?
Ans. Speed
11. In what unit is noise measured?
Ans. Decibel
12. Under what condition is the easiest method to convert a gas into a liquid?
Ans. low temperature and high pressure
13. A mass of water is placed at 0°C. On heating to 10°C, its volume will be -
Ans. will increase after decrease
14. The temperature whose reading is equal on both the Fahrenheit and Celsius scale is -
Ans. –40°
15. On what does the pitch of sound depend?
Ans. frequency
#Physics
#General_knowledge
@Science_Study_Daily