Raman
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May 23, 2022
(a) 4.2 years (b) 2.8 years (c) 5.6 years (d) 8.4 years Answer: b (9)
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May 23, 2022
(a) A (b) B (c) C (d) D Answer: c (14)
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May 23, 2022
(a) The time taken in travelling DAB is less than that for BCD (b) The time taken in travelling DAB...
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May 23, 2022
(a) 53/2 years (b) 52/3years (c) 51/3 years (d) 51/2 years Answer: a (6)
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May 23, 2022
(a) Copernicus (b) Kepler (c) Galileo (d) None Answer: A (7)
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May 23, 2022
A satellite of mass m is circulating around the earth with constant angular velocity. If radius of the orbit is...
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May 23, 2022
The largest and the shortest distance of the earth from the sun are r1 and r2 , its distance from...
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May 23, 2022
Two planets move around the sun. The periodic times and the mean radii of the orbits are T1 , T2and...
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May 23, 2022
A planet moves around the sun. At a given point P, it is closest from the sun at a distance...
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May 23, 2022
The earth revolves about the sun in an elliptical orbit with mean radius 9.3 × 107 in a period of...
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May 23, 2022
The figure shows the motion of a planet around the sun in an elliptical orbit with sun at the focus....
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May 23, 2022
The distance of neptune 1013 and 1012 saturn from sun are nearly and meters respectively. Assuming that they move in circular...
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May 23, 2022
When a satellite going round the earth in a circular orbit of radius r and speed v loses some of...
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May 23, 2022
In planetary motion the areal velocity of position vector of a planet depends on angular velocity (ω) and the distance...
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May 23, 2022
Two planets at mean distance d1 and d2 from the sun and their frequencies are n1 and n2 respectively then Answer:...
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May 23, 2022
Potential energy of a satellite having mass ‘m’ and rotating at a height of 6.4 × 106m from the earth...
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May 23, 2022
A satellite with kinetic energy Ek is revolving round the earth in a circular orbit. How much more kinetic energy...
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May 23, 2022
If the gravitational force between two objects were proportional to 1/R (and not as 1/R2) where R is separation between...
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May 23, 2022
Distance of geostationary satellite from the surface of earth radius (Re =6400 km )in terms of Re) is (a) ...
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May 23, 2022
The distance between centre of the earth and moon is 384000 km. If the mass of the earth is 6...
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May 23, 2022
Given radius of Earth ‘R’ and length of a day ‘T’ the height of a geostationary satellite is [G–Gravitational Constant,...
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May 23, 2022
The orbital speed of an artificial satellite very close to the surface of the earth is V° . Then the...
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May 23, 2022
Two satellites of masses m1 and m2( m1>m2 ) are revolving round the earth in circular orbits of radius r1...
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May 23, 2022
3 particles each of mass m are kept at vertices of an equilateral triangle of side L. The gravitational field...
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May 23, 2022
A particle of mass 10 g is kept on the surface of a uniform sphere of mass 100 kg and...
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May 23, 2022
The escape velocity from earth is ves. A body is projected with velocity 2 ves with what constant velocity will it...
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May 23, 2022
A planet has twice the radius but the mean density is 1/4 th as compared to earth. What is the...
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May 23, 2022
The acceleration due to gravity on a planet is same as that on earth and its radius is four times...
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May 23, 2022
The escape velocity for a body of mass 1 kg from the earth surface is 11.2 kms-1 The escape velocity...
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May 23, 2022
The escape velocity for the earth is ve . The escape velocity for a planet whose radius is four times...
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May 23, 2022
The radius of a planet is 1/4 of earth’s radius and its acceleration due to gravity is double that of...
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May 23, 2022
The escape velocity of a body on an imaginary planet which is thrice the radius of the earth and double...
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May 23, 2022
A mass of 6 × 1024 kg is to be compressed in a sphere in such a way that the escape...
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May 23, 2022
The ratio of the radii of planets A and B is k1 and ratio of acceleration due to gravity on...
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May 23, 2022
How many times is escape velocity ( Ve ) , of orbital velocity (V0 )for a satellite revolving near earth (a)...
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May 23, 2022
The least velocity required to throw a body away from the surface of a planet so that it may not...
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May 23, 2022
How much energy will be necessary for making a body of 500 kg escape from the earth [g=9.8 m/s2 ,...
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May 23, 2022
v e and vp denotes the escape velocity from the earth and another planet having twice the radius and the...