GRAVITATION-QUIZ-9

Gravitation QUIZ-9

Dear Readers,

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. Assume that the acceleration due to gravity on the surface of the moon is 0.2 times the acceleration due to gravity on the surface of the earth. If Re is the maximum range of a projectile on the earth’s surface, what is the maximum range on the surface of the moon for the same velocity of projection

•  0.2 Re
•  2 Re
•  0.5 Re
•  5 Re

Solution

Q2.The escape velocity of a body from the earth is Ve. If the radius of earth contracts to 1/4th of its value, keeping the mass of the earth constant, the escape velocity will be

•  Doubled
•  Halved
•  Tripled
•  Unaltered

Solution

Q3.  The Ratio of the distances of two planets from the sun is 1.38.The ratio of their period of revolution around the sun is

•   1.38
•  1.383/2
•  1.381/2
•  1.383

Solution

Q4. A planet in a distant solar system is 10 times more massive than the earth and its radius is 10 times smaller .Given that the escape velocity from the earth is 11Km/s, the escape velocity from the surface of planet would be

•  1.1 Km/s
•  11Km/s
•  110Km/s
•  0.11Km/s

Solution

Q5.A satellite moves in a circle around the earth. The radius of this circle is equal to one-half of the radius of the moon's orbit. The satellite completes one revolution in

•  1/2 lunar month
•  2/3 lunar month
•  2-3/2 lunar month
•  2-3/2 lunar month

Solution

Q6. A body is released from a point distance r from the centre of earth.If R is the earth and r>R, then the velocity of the body at the time of striking the earth will be

•  gR
•  2gR
•  2gR-R
•  2gR(r-R)/r

Solution

Q7.Two equal masses m and m are hung from a balance whose scale pans differ in height by h.If p is the mean density of earth ,then the error in weighing is

•  Zero
•  4πGρmh/3
•  8πGρmh/3
•  2πGρmh/3

Solution

Q8.A 20cm long capillary tube is dipped in water.The water rises upto 8cm.If entire arrangement is put in a freely falling elevator lengths of water column in the capillary tube will be

•  4 cm
•  8cm
•  10cm
•  20cm

Solution

Q9.A satellite revolves around the earth in an elliptical orbit. Its speed

•  Is the same at all points in the orbit
•  is greatest when it is closest to the earth
•  Is greatest when it is farthest from the earth
•  Goes on increasing or decreasing continuously depending upon the mass of the satellite

Solution

Q10. A geostationary satellite

•  Revolves about the polar axis
•  Has a time period less than that of the near earth satellite
•  Moves faster than a near earth satellite
•  is stationary in the space

Solution

Water fills the tube entirely in gravity less condition.