TG EAPCET 2024 (Online) 9th May Evening Shift | Gravitation Question 5 | Physics

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

TG EAPCET 2024 (Online) 9th May Morning Shift

MCQ (Single Correct Answer)

-0

The energy required to take a body from the surface of the earth to a height equal to the radius of the earth is $W$. The energy required to take this body from the surface of the earth to a height equal to twice the radius of the earth is

$\frac{W}{3}$

$\frac{2 W}{3}$

$W$

$\frac{4 W}{3}$

TS EAMCET 2023 (Online) 12th May Evening Shift

MCQ (Single Correct Answer)

-0

The ratio of the radii of two planets is $r$ and the ratio of accelerations due to gravity on the planets is $x$. Then the ratio of the escape velocities from the planets is

$x r$

$\sqrt{\frac{r}{x}}$

$\sqrt{\sqrt{x}}$

$\sqrt{\frac{x}{r}}$

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