JEE Main 2021 (Online) 20th July Morning Shift | Gravitation Question 61 | Physics

JEE Main 2021 (Online) 20th July Morning Shift

MCQ (Single Correct Answer)

-1

A person whose mass is 100 kg travels from Earth to Mars in a spaceship. Neglect all other objects in sky and take acceleration due to gravity on the surface of the Earth and Mars as 10 m/s² and 4 m/s² respectively. Identify from the below figures, the curve that fits best for the weight of the passenger as a function of time.

JEE Main 2021 (Online) 20th July Morning Shift Physics - Gravitation Question 61 English

JEE Main 2021 (Online) 20th July Morning Shift Physics - Gravitation Question 61 English

(b)

(c)

(d)

(a)

JEE Main 2021 (Online) 18th March Evening Shift

MCQ (Single Correct Answer)

-1

If the angular velocity of earth's spin is increased such that the bodies at the equator start floating, the duration of the day would be approximately : [Take g = 10 ms^$$-$$2, the radius of earth, R = 6400 $$\times$$ 10³ m, Take $$\pi$$ = 3.14]

84 minutes

1200 minutes

60 minutes

does not change

JEE Main 2021 (Online) 18th March Evening Shift

MCQ (Single Correct Answer)

-1

The angular momentum of a planet of mass M moving around the sun in an elliptical orbit is $${\overrightarrow L }$$. The magnitude of the areal velocity of the planet is :

$${{2L} \over M}$$

$${{L} \over 2M}$$

$${{L} \over M}$$

$${{4L} \over M}$$

JEE Main 2021 (Online) 18th March Morning Shift

MCQ (Single Correct Answer)

-1

Match List - I with List - II.

List - I

(a) 10 km height over earth's surface

(b) 70 km height over earth's surface

(c) 180 km height over earth's surface

(d) 270 km height over earth's surface

List - II

(i) Thermosphere

(ii) Mesosphere

(iii) Stratosphere

(iv) Troposphere

(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)

(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

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