1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by
A
NEET 2016 Phase 2 Physics - Gravitation Question 61 English Option 1
B
NEET 2016 Phase 2 Physics - Gravitation Question 61 English Option 2
C
NEET 2016 Phase 2 Physics - Gravitation Question 61 English Option 3
D
NEET 2016 Phase 2 Physics - Gravitation Question 61 English Option 4
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
The ratio of escape velocity at earth (ve) to the escape velocity at a planet (vp) whose radius and mean density are twice as that of earth is
A
1 : 4
B
1 : $$\sqrt 2 $$
C
1 : 2
D
1 : 2$$\sqrt 2 $$
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
At what height from the surface of earth the gravitation potential and the value of g are $$-$$5.4 $$ \times $$ 107 J kg$$-$$1 and 6.0 m s$$-$$2 respectively? Take the radius of earth as 6400 km.
A
1400 km
B
2000 km
C
2600 km
D
1600 km
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
A satellite S is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth. Then,
A
the linear momentum of S remains constant in magnitude.
B
the acceleration of S is always directed towards the centre of the earth.
C
the angular momentum of S about the centre of the earth changes in direction, but its magnitude remains constant.
D
the total mechanical energy of S varies periodically with time.
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