## GRAVITATION QUIZ-6

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background.

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced.

Q1. In anelliptical orbit under gravitational force,in general
•  Tangential velocity is constant
•  Angular velocity is constant
•  Area velocity is constant
Solution

Q2.A thin uniform annular disc(see figure) of mass M has outer radius 4R and inner radius 3R.The work required to take a unit mass from point p on its axis to infinity is

•  2GM7R(42-5)
•  -2GM7R(42-5)
•  GM4R
•  2GM5R(2-1)
Solution

Q3.  If then radius of earth R,then the height h at which the value of g becomes one-fourth, will be
•   R8
•  3R8
•  3R4
•  R2
Solution

Q4. Two small and heavy spheres, each of mass M, are placed a distance r apart on a horizontal surface. The gravitational potential at the mid-point on the line joining the centre of the spheres is
•  Zero
•  -GMr
•  -2GMr
•  -4GMr
Solution

Q5.If the mass of moon is190 of earth^' s mass, its radius is13 of earth^' sradius and if g is acceleration due to gravity on earth, then the acceleration due to gravity on moon is..
•  g3
•  g90
•  g10
•  g9
Solution

Q6. Which of the following graphs represents the motion of a planet moving about the sun
•

•

•

•

Solution

Q7.The escape velocity for a body projected vertically upwards from the surface of earth is 11 kms-1. If the body is projected at an angle of 45° with the vertical, the escape velocity will be
•  112 Kms-1
•  22 Kms-1
•  11Kms-1
•  11/2ms-1
Solution

Q8.A rocket is launched with velocity 10 km/s. If radius of earth is R, then maximum height attained by it will be
•  2R
•  3R
•  4R
•  5R
Solution

Q9.The mass of the earth is 6.00×1022 kg. The constant of gravitation g=6.67×10-11Nm2kg-2. The potential energy of the system is -7.73×1028 J. The mean distance between earth and moon is
•  3.80*180m
•  3.37*106m
•  7.60104m
•  1.90102m
Solution

Q10. Gravitational mass is proportional to gravitational
•  Field
•  force
•  Intensity
•  All of these
Solution

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