Physics
Grade-9
Easy
Question
1 cal = ___ J
- 1000
- 2.4
- 4.2
- 3.6
Hint:
1 cal = 4.2 Joules
The correct answer is: 4.2
Joule is the unit of work whereas calorie is the unit of energy. As energy and work are inter-convertible, we can find experimentally that when approximately 4.2 joules of work is converted to energy, 1 calorie of energy is produced and when 1 calorie of energy is spent approximately 4.2 joule of work is done.
Related Questions to study
Physics
1 kcal = ____ cal.
1 kcal = ____ cal.
PhysicsGrade-9
Physics
1 Joule = ________________ Erg.
1 Joule = ________________ Erg.
PhysicsGrade-9
Physics
The S I unit of heat is _____________.
The S I unit of heat is _____________.
PhysicsGrade-9
Physics
Malvika keeps melted ice-cream in the freezer for it to freeze back. Which of the following happens to the ice-cream?
Malvika keeps melted ice-cream in the freezer for it to freeze back. Which of the following happens to the ice-cream?
PhysicsGrade-9
Physics
Four systems are at the following temperatures in degree Celsius. the speed of particles of which of the systems is the lowest?
Four systems are at the following temperatures in degree Celsius. the speed of particles of which of the systems is the lowest?
PhysicsGrade-9
Physics
100 degrees Celsius = ____ degree Fahrenheit.
100 degrees Celsius = ____ degree Fahrenheit.
PhysicsGrade-9
Physics
27 degrees Celsius = _____K
27 degrees Celsius = _____K
PhysicsGrade-9
Physics
Four systems are at the following temperatures in degree Celsius. the average KE of which of the systems is the highest?
Four systems are at the following temperatures in degree Celsius. the average KE of which of the systems is the highest?
PhysicsGrade-9
Physics
Which of the following does not determine the amount of heat contained in a body?
Which of the following does not determine the amount of heat contained in a body?
PhysicsGrade-9
Physics
Equal quantities of olive oil and water, at room temperature, are heated by providing the same amount of heat. Which of the following is true about their final temperatures?
Equal quantities of olive oil and water, at room temperature, are heated by providing the same amount of heat. Which of the following is true about their final temperatures?
PhysicsGrade-9
Physics
At the absolute zero temperature ______.
At the absolute zero temperature ______.
PhysicsGrade-9
Physics
The speed of the particles of a substance is 0 at which of the following temperatures?
The speed of the particles of a substance is 0 at which of the following temperatures?
PhysicsGrade-9
Physics
100 degrees Celsius = ___ K.
100 degrees Celsius = ___ K.
PhysicsGrade-9
Physics
A person starts heating water at room temperature in a sealed vessel. Which of the following will not happen?
A person starts heating water at room temperature in a sealed vessel. Which of the following will not happen?
PhysicsGrade-9
Physics
Four systems are at the following temperatures in degree Celsius. the speed of particles of which of the systems is the highest?
Four systems are at the following temperatures in degree Celsius. the speed of particles of which of the systems is the highest?
PhysicsGrade-9
