MHT CET 2021 23th September Morning Shift | Gravitation Question 72 | Physics

The radius of a planet is twice the radius of the earth. Both have almost equal average mass densities. If '$$V_P$$' and '$$V_E$$' are escape velocities of the planet and the earth respectively, then

$$\mathrm{V}_{\mathrm{E}}=1.5 \mathrm{~V}_{\mathrm{P}}$$

$$\mathrm{V}_{\mathrm{P}}=1.5 \mathrm{~V}_{\mathrm{E}}$$

$$\mathrm{V_P=2 V_E}$$

$$\mathrm{V_E=3 V_P}$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

Two satellites of same mass are launched in circular orbits at heights '$$R$$' and '$$2 R$$' above the surface of the earth. The ratio of their kinetic energies is ($$R=$$ radius of the earth)

$$1: 3$$

$$3: 2$$

$$4: 9$$

$$9: 4$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

At a height 'R' above the earth's surface the gravitational acceleration is (R = radius of earth, g = acceleration due to gravity on earth's surface)

$$\frac{\mathrm{g}}{8}$$

$$\frac{g}{4}$$

$$\frac{g}{2}$$

MHT CET 2021 22th September Morning Shift

MCQ (Single Correct Answer)

-0

The mass of a planet is six times that of the earth. The radius of the planet is twice that of the earth. If the escape velocity from the earth is '$$V_e$$', then the escape velocity from the planet is

$$\sqrt{3} \mathrm{~V}_{\mathrm{e}}$$

$$\sqrt{2} \mathrm{~V}_{\mathrm{e}}$$

$$\mathrm{V}_{\mathrm{e}}$$

$$\sqrt{5} \mathrm{~V}_{\mathrm{e}}$$

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