TG EAPCET 2024 (Online) 10th May Evening Shift | Gravitation Question 3 | Physics

The ratio of the radii of a planet and the earth is $1: 2$, the ratio of their mean densities is $4: 1$. If the acceleration due to gravity on the surface of the earth is $9.8 \mathrm{~ms}^{-2}$, then the acceleration due to gravity on the surface of the planet is

$4.9 \mathrm{~ms}^{-2}$

$29.4 \mathrm{~ms}^{-2}$

$8.9 \mathrm{~ms}^{-2}$

$19.6 \mathrm{~ms}^{-2}$

TG EAPCET 2024 (Online) 10th May Morning Shift

MCQ (Single Correct Answer)

-0

Two stars of masses $M$ and $2 M$ that are at a distance $d$ apart, are revolving one around another. The angular velocity of the system of two stars is ( $G$-Universal gravitational constant)

$\sqrt{\frac{4 G M}{d^3}}$

$\sqrt{\frac{2 G M}{d^3}}$

$\sqrt{\frac{9 G M}{d^3}}$

$\sqrt{\frac{3 G M}{d^3}}$

TG EAPCET 2024 (Online) 9th May Evening Shift

MCQ (Single Correct Answer)

-0

The ratio of the accelerations due to gravity at heights 1280 km and 3200 km above the surface of the earth is (Radius of the earth $=6400 \mathrm{~km}$ )

$25: 16$

$5: 2$

$1: 1$

$25: 4$

TG EAPCET 2024 (Online) 9th May Morning Shift

MCQ (Single Correct Answer)

-0

Regarding fundamental forces in nature, the correct statement is

electromagnetic forces are always attractive

electromagnetic forces are always repulsive

gravitational forces are always attractive

strong nuclear forces are always repulsive

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