Physics question and answers for May 12, 2024
- Q If an object is projected vertically upwards with speed three times of the escape speed v from earth s surface then velocity of object in the interstellar space will be...
- Q 3 10 A cyclist rides along the circumference of a circular Horizontal plane of radius R the frictional coefficient being dependent only on distance r from the centre O of...
- Q Q 4 Escape velocity of a body of 1 kg mass on a planet is 100 m sec Gravitational Potential energy of the body at the Planet is Choose only...
- Q In a certain universe the gravity is a conservative force but not necessarily an inverse square law force In that universe there exists a single point like mass m that...
- Q c 14 ms d 5 Two stars of masses m and my distance r apart revolve about their centre of mass The period of revolution is a 2 c 2...
- Q Two wires of the same material have lengths in the ratio 1 2 and their radii are in the ratio 1 2 If they are stretched by applying equal forces...
- Q ameter of change heated to copper has a error in the de a 0 9 b 2 4 c 23 A carpet of mass M made of an extensible material...
- Q A particle is dropped in three tunnels ACB AEB and ADB through earth and takes time to reach at point B respectively t1 t2 and t3 Then which of the...
- Q A uniform string of large length L of uniform cross section mass per unit length and free at both ends is revolving round the earth at equator in vertical position...
- Q Two Earth s satellites move in a common plane along circular orbits The orbital radius of one satellite is r while that of the other satellite is r Ar Here...
- Q A planet of mass m revolves ar orbit of area A and eccentricity 0 5 1 3 SUN It moves between point P to Q in time At then the...
- Q 14 The ratio of the energy required to raise a satellite upto a height R radius of earth from the surface of earth to that required to put it into...
- Q c 2R 17 The gravitational field in a region is given by E 41 i N kg Work done by this field is zero when a particle is moved along...
- Q The time taken by the light and its order of magnitude if travels a distance of 5 6 x 1025 m between two planets Speed of light c 3 x...
- Q mtG Objective NCERT P 18 A spaceship is launched into a circular orbit close earth s surface The additional velocity that should be imparted to the spaceship in the orbit...
- Q a a 2A X c b 16 A uniform ring of mass Mand radius Ris placed directly above a uniform sphere of mass 8 M and of same radius R...
- Q 31 Three solid spheres each of mass m and radius R are released from the position shown in figure The speed of any one sphere at the time of collision...
- Q Example 10 8 A fully loaded Boeing aircraft has a mass of 3 3 x 105 kg Its total wing area is 500 m It is in level flight with...
- Q A large spherical mass M is fixed at one position and two identical point masses m are kept on a line passing through the centre of M see figure The...
- Q Weight of a body at the equator of a planet is half of that at the poles If peripheral velocity of a point on the equator of this planet is...
- Q An asteroid orbiting around a planet in circular orbit suddenly explodes into two fragments in mass ratio 1 4 If immediately after the explosion the smaller fragment starts orbiting the...
- Q 10 Consider a thought experiment performed in free space In the experiment a small cube C of mass m is placed at the centre of a large and highly massive...
- Q Three identical point masses each of mass 1 kg lie in the x y plane at points 0 0 0 0 2 m and 0 2 m 0 The gravitational...
- Q Example 8 4 Two uniform solid spheres of equal radii R but mass M and 4 M have a centre to centre separation 6 R as shown in Fig 8...
- Q vater The distance of a planet from the sun is 5 times the distance between the earth and the sun The time period of the planet is 1 53 2...
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