AP EAPCET 2025 - 23rd May Morning Shift | Gravitation Question 7 | Physics

A mass of $6 \times 10^{24} \mathrm{~kg}$ is to be compressed in the form of a solid sphere such that the escape velocity from its surface is $3 \times 10^4 \mathrm{~ms}^{-1}$. The radius of the sphere is

(Universal gravitational constant $=6.66 \times 10^{-11} \mathrm{~N} \mathrm{~m}^2 \mathrm{~kg}^{-2}$ )

483 km

575 km

789 km

888 km

AP EAPCET 2025 - 22nd May Evening Shift

MCQ (Single Correct Answer)

-0

Two satellites $A$ and $B$ are revolving around the Earth in orbits of heights $1.25 R_E$ and $19.25 R_E$ from the surface of Earth respectively, where $R_E$ is the radius of the Earth. The ratio of the orbital speeds of the satellites $A$ and $B$ is

$5: 1$

$4: 1$

$9: 1$

$3: 1$

AP EAPCET 2025 - 22nd May Morning Shift

MCQ (Single Correct Answer)

-0

Two solid spheres each of radius ' $R$ ' made of same material are placed in contact with each other. If the gravitational force acting between them is $F$, then

$F \alpha R^4$

$F \alpha R^3$

$F \alpha R^2$

$F \alpha R$

AP EAPCET 2025 - 21st May Evening Shift

MCQ (Single Correct Answer)

-0

If the angular velocity of a planet about its axis is halved, the distance of the stationary satellite of this planet from the centre of the planet becomes $2^n$ times the initial distance. Then, the value of ' $n$ ' is

$\frac{2}{3}$

$\frac{3}{2}$

$\frac{1}{3}$

$\frac{4}{3}$

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