(This is specially for the class 10 students.)
#20 mcq from topic gravitational force solve and comment your answer
1. What is the formula to calculate gravitational force between two objects?
a. F = G * m1 * m2 / r^2
b. F = G * (m1 + m2) * r
c. F = G / m1 * m2 * r
d. F = G / (m1 + m2) / r^2
2. What does "G" represent in the formula for gravitational force?
a. Acceleration
b. Mass of one object
c. Distance between two objects
d. Universal gravitational constant
3. Which of the following units is NOT used to measure the universal gravitational constant?
a. N
b. m
c. kg
d. s^-2
4. If the mass of two objects increases, how does the gravitational force between them change?
a. Increases
b. Decreases
c. Remains the same
d. Doubles
5. What is the approximate value of the universal gravitational constant?
a. 4.9 m/s
b. 9.8 m/s^2
c. 6.67 x 10^-11 N(m/kg)^2
d. 3 x 10^8 m/s
6. According to Newton's law of universal gravitation, what happens to the gravitational force if the distance between two objects doubles?
a. Doubles
b. Quadruples
c. Halves
d. Quadratic increase
7. What happens to the gravitational force if one of the masses of the objects is doubled?
a. Doubles
b. Halves
c. Quadruples
d. Remains the same
8. The universal gravitational constant, G, is also known as:
a. Newton's constant
b. Speed of light
c. Planck's constant
d. Boltzmann constant
9. In the equation for gravitational force, what does "r" stand for?
a. Resultant force
b. Radius of the objects
c. Relative acceleration
d. Random variable
10. What happens to the gravitational force if the distance between two objects is tripled?
a. Doubles
b. Halves
c. Thirds
d. Ninths
11. What would happen to the gravitational force on Earth if its mass doubled but its radius stayed the same?
a. Quadruples
b. Doubles
c. Halves
d. No change
12. Which of the following scientists is credited with discovering the universal law of gravitation?
a. Albert Einstein
b. Isaac Newton
c. Galileo Galilei
d. Archimedes
13. If the mass of one object is halved while keeping the other mass and the distance constant, how would the gravitational force change?
a. Halves
b. Doubles
c. Quadruples
d. No change
14. What is the SI unit for the universal gravitational constant?
a. N/kg
b. m/s
c. kg/m^2
d. N(m/kg)^2
15. How does the gravitational force between two objects change as the distance between them increases?
a. Increases
b. Decreases
c. Remains the same
d. Becomes negative
16. The universal gravitational constant is approximately equal to:
a. 9.81 m/s^2
b. 3.14
c. 6.67 x 10^-11 N(m/kg)^2
d. 2.997 x 10^8 m/s
17. What are the units of the universal gravitational constant (G)?
a. m/s^2
b. N/kg
c. J
d. N(m/kg)^2
18. What term describes the force of attraction between two objects with mass?
a. Electromagnetic force
b. Gravitational force
c. Nuclear force
d. Frictional force
19. How does the mass of an object affect the gravitational force it experiences?
a. Mass has no effect on gravitational force
b. More mass, less gravitational force
c. More mass, more gravitational force
d. Less mass, less gravitational force
20. If the distance between two objects is increased by a factor of 3, how does the gravitational force change?
a. Increases by a factor of 3
b. Decreases by a factor of 3
c. Increases by a factor of 9
d. Decreases by a factor of 9
Answer Key (Always review AI generated answers for accuracy - Math is more likely to be inaccurate)
a. F = G * m1 * m2 / r^2
d. Universal gravitational constant
b. m
a. Increases
c. 6.67 x 10^-11 N(m/kg)^2
c. Halves
a. Doubles
a. Newton's constant
b. Radius of the objects
b. Halves
a. Quadruples
b. Isaac Newton
a. Halves
d. N(m/kg)^2
b. Decreases
c. 6.67 x 10^-11 N(m/kg)^2
d. N(m/kg)^2
b. Gravitational force
c. More mass, more gravitational force
b. Decreases by a factor of 3
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