Gravitation Quiz 1

Question 1

The value of universal gravitational Constant G is:

Accepted Answer

$6.673\times10^{-11}N\,m^2kg^{-2}$

Answer

$6.673\times10^{-11}N\,m^2kg^{-3}$

Answer

$6.673\times10^{11}N\,m^2kg^{-2}$

Answer

$6.673\times10^{12}N\,m^2kg^{2}$

Question 2

According to gravitational law, the force between two objects is inversely proportional to_____.

Accepted Answer

$\frac1{r^2}$

Answer

$\frac1r$

Answer

$\frac1{r^3}$

Answer

None of these

Question 3

Which of the following is correct for universal law of Gravitation?

Accepted Answer

F = G$\frac{M\,m}{r^2}$

Answer

F = G$\frac{M\,m}{r}$

Answer

F = G$\frac{M\,m}{r^3}$

Answer

F = g$\frac{M\,m}{r^2}$

Question 4

Which of the following is correct for third law of Kepler?

Accepted Answer

$\frac{r^3}{T^2}$ = Constant

Answer

$\frac{r^2}{T^3}$ = Constant

Answer

$\frac{r^2}{T^2}$ = Constant

Answer

None of these

Question 5

The value of acceleration due to gravity of the earth is:

Accepted Answer

9.8$\,ms^{-2}$

Answer

9.7$\,ms^{-2}$

Answer

10$\,ms^{-2}$

Answer

Zero

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