Which of the following is incorrect about the value of $g$?

Two identical solid spheres each of radius $r$ are in contact with each other. If the gravitational attraction between them is $F$, then which of the following relations is correct?

The gravitational effect of which of the following causes tides in the sea?

The mass of a planet is double the mass of the earth and its radius is half of that of the earth. If $F$ is the force of attraction on an object on the surface of earth, then the force of attraction on the same object on the surface of that planet is _____.

A ball dropped from a height of $10 \mathrm{m}$. As it falls,

A barometer can be used to determine the_____of a particular place.

If the mass of a body on the surface of moon is denoted by $M_m$ and that on the earth by $M_e$, then

The acceleration due to gravity on the surface of the earth depends upon the

Which of the following statement(s) is/are wrong?