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PDF created’ with pdiFacto, , @®WMarain Institute PCB CHALLENGER test series NEET-2022, , PHYSICS, Gravitation, , TEST PAPER - 04, , 01., orbit is closest to the sun at a distance r, and farthest away at a distance of r,. If v, and v, are the linear, velocities at these points respectively,, then the ratio v, / v, is :, , (a) r,/ Tr,, (b) (r, / 1)?, (c) r,/ 4,, (d) (r, / 1)?, , 02., calculating the mass of the Earth by, using the formula (in usual notation)., , A planet moving along an eliptical 03., , One can easily weighs the earth by 94., , 26.02.2022, , Three equal masses of 1 kg each, are placed at the vertices of an equilateral triangle PQR and a mass of 2, kg is placed at the centroid O of the, triangle which is at a distance of pm, from each of the vertices of the triangles. The force, in newton, acting, on the mass of 2 kg is :, , (a) 2, (b) 42, (c) 1, (d) zero, , What will be the acceleration due, to gravity at a depth d where g is acceleration due to gravity on the surface of earth ?, , , , , , (a) ¢ R?. (a), {1 |, (b) ERY, oO, 7 (b) g [1- =|, () £R, a, (d) © R°, (c) (1-3), g \ }, (d) g /;-9|, \ R;, @Warain Institute Run and Manage by- £7 KD. SINGH 1, , lind Floor, JB “Sky Hilton” Bufiding, Alambagh, Lucknow, Ph.No. 9236182534, 8318021149, , ry Pro trial version www.paffactory.com
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@WMarain Institute PCB CHALLENGER test series NEET-2022, , TEST PAPER - 04, , 05. The mass of the moon is 1 / 81 of 07., , the earth but gravitational pull is 1/6, of the earth. It is due to the fact that, , (a) the radius of the moon is 81 / 6 of, the earth, , (b) the radius of the earth is 9/ 16 of, the moon, , (c) moon is the satellite of the earth, (d) none of these, , 06. Two particles of equal mass go, round a circle of radius R under the, action of their mutual gravitational, attraction. The speed v of each particle is :, , 26.02.2022, , Which of the following graphs shows, the variation of acceleration due to, gravity g with depth h from the surface of the earth ?, , (a Me., oY., wX, , oe, ~, , , , , , (d), ______»h, (a) [=, b) i fa | Two planets have radii r, andr, and, 0) 5 2R \WGm! densities d, and d, respectively. Then, the ratio of accelerations due to grav(c) 5 - (sx) ity on them is :, (a) rt, d,: 4d,, (d) \ Gu) (b) r, d, 54, d,, : (c) 2d, 212d,, (d) r, 02:1, d?, @Warain Institute Run and Manage by- Er kK. 0. SINGH 2, , lind Floor, JB “Sky Hilton” Bufiding, Alambagh, Lucknow, Ph.No. 9236182534, 8318021149, , PDF created’ with pdiFactory Pro trial version www.pdffactory.com
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@®WMarain Institute PCB CHALLENGER test series NEET-2022, , TEST PAPER - 04 26.02.2022, , 09. Ifgisthe acceleration due to grav- 12. The radius of the earth is R. The, ity on the surface of earth, its value at height of a point vertically above the, a height equal to double the radius of earth’s surface at which acceleration, , earth is : due to gravity becomes 1% of its value, (a) g at the surface is :, (b) g/2 (a)8R, (c)g/3 (b)9R, (d)g/9 (c)10R, (d) 20R, , 10. The acceleration due to gravity on, the planet Ais 9 times the acceleration due to gravity on planet B. Aman, jumps to a height of 2 m on the surface of A. What is the height of jump, , by the same person on the planetB? 13. Imagine a new planet having the, , (a) 6m same density as that of earth but it is, , 3 times bigger than the earth in size., , (b)2/3m If the acceleration due to gravity on, (c)2/9m the surface of earth is g and that on, (d) 18m the surface of the new planet is g,, , then:, , (a)g =3g, , (b)g =g/9, , 11. If the radius of earth of R then the ., height h at which the value of gbe- (°)9 =99, comes one-fourth, will be : (d)g =279, , (a) R/8, (b) 3R/8, (c) 3R/4, (d)R/2, , Roun aed Mi = Er. K. D. SINGH, @OWMarain institute lind Floor, JB “Sky Hutton" Benang. alarbagh, Lucknow, Pho. 9236182534, 6318021149 ;, , PDF created with pdiFactory Pro trial version www.pdffactory.com
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@®WMarain Institute PCB CHALLENGER test series NEET-2022, , TEST PAPER - 04, , 14., , 15., , @Warain Institute, PDF created with pdiFacto, , Acceleration due to gravity :, (a) decreases from equator to poles, (b) decreases from poles to equator, , (c) is maximum at the centre of the, earth, , (d) is maximmum at the equator, , The depth at which the value of, acceleration due to gravity becomes, 1/ntime the value at the surface is, (R be the radius of the earth)., (a)R/n, , (b) R/n?, , , , (c)R*, , 1, n, , (d), , , , Rn, n-1, , 26.02.2022, , A Satellite launch station should be, , (a) near the equatorial region, (b) near the polar region, , (c) on the polar axis, , (d) all the locations are possible, , At what depth below the surface of, the earth, acceleration due to gravity, g will be half its value 1600 km above, the surface of the earth ?, , (a) 4.2 x 10° m, , (b) 3.19 x 108m, (c) 1.59 x 10°m, (d) none of these, , Run and Manage by-C) KD. SINGH 4, lind Floor, JB “Sky Hilton” Building, Alambagh, Lucknow, Ph.No. 9236182534, 8318021149, , ry Pro trial version www.paffactory.com
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@WMarain Institute PCB CHALLENGER test series NEET-2022, , TEST PAPER - 04 26.02.2022, , 18. The escape speed of abody from 20. The energy required to move a, the surface of earth (Radius of earth satellite of mass m from an orbit of, , =R,)is: radius 2 R to 3 R around earth of mass, (a) fon, Mis:, (a) GMm/12R, s [are (b) GMm/ R, 1° (c) GMm/8R, (c) gR, (d) GMm/2R, (d) 29%, , 21. TwoplanetsAandB have the same, material density. If the radius of A is, twice that of B, then the ratio of es, 19. The escape velocity for an object, from the surface of earth (radius R), , s — cape velocity v, / v, is :, (a) JoR (a)2, ()gR (b) 42, [2, (c) aor () 1/42, —, (d) #2aR (d) 1/2, @Warain Institute Run and Manage by- Er kK. 0. SINGH 5, , lind Floor, JB “Sky Hilton” Bufiding, Alambagh, Lucknow, Ph.No. 9236182534, 8318021149, , PDF created with pdiFactory Pro trial version www.pdffactory.com
