Physics question and answers for May 11, 2024
- Q Two uniform sphere each of mass M and radius R separated by a disctance 10R A point mass m projected from surface of one sphere towards other sphere The minimum...
- Q 8 The variations in acceleration due to gravity g of two planets A and B are plotted as a function of distance r from its center Which of the following...
- Q A satellite is seen after each 8 hours over equator at a place on the Earth when its sense of rotation is opposite to the Earth The time interval after...
- Q Two bodi gravitational potential V at the position where the gravitational field du to them is zero Vis Ov m M Ov Ov GM C
- Q The escape velocity for a planet is ve A particle starts from rest at a large distance from the planet reaches the planet only under gravitational attraction and passes through...
- Q An orbiting satellite will escape if Question Type Single Correct Type 1 Its speed in the orbit is made 1 5 times of its initial values 2 Its kinetic energy...
- Q 1 A binary star consists of two stars A mass 2 2M and B mass 11M where Mis the mass of the sun They are separated by distance d and...
- Q The value of g at a particular point on the surface of earth is 9 8 m s2 Suppose the earth suddenly shrinks uniformly to half its present size without...
- Q The figure shows ellipt shaded area SCD is twice the shaded area SAB If t be the planet to move from C to D and to is the time to...
- Q D A steel wire of diameter 0 8 mm and length 1m is clamped firmly at two points A and B which are 1m apart and in the same plane...
- Q At surface of earth weight of person 72N then his weight at height R 2 from surface of earth is R Radius of earth Question Type Single Correct Type 1...
- Q 6 88 A planet moves along an elliptical orbit around the sun At the moment when its distance from the sun is ro its velocity at angle a to ro...
- Q 6 92 A meteorite approaching a planet of mass M in the straight line passing through the centre of the planet collides with an automatic space station orbiting the planet...
- Q 6 83 Masses assumed to be equal to m each hang from strings of different lengths from the ends of a balance on the surface of the earth If the...
- Q 6 93 Two satellites of the earth move in the same plane with radii a and b b being slightly greater than a What is the minimum interval between the...
- Q 6 94 Two lead spheres of 20 cm and 2 cm diameter are placed with their centres 1 0 m apart Calculate the force of attraction between the two spheres...
- Q 6 78 A satellite of mass m is revolving round the earth at a height R above the surface of earth If R is the radius of earth what is...
- Q A solid spherical planet of mass 2m and radius R has a very small tunnel along its diameter A small cosmic particle of mass m is at a distance 2R...
- Q 6 87 The density of the core of a planet is p and that of the outer shell is p The radii of the core and that of the planet...
- Q A particle is projected vertically upwards such th it attains a height of h after 5 sec and 9 sec of motion The speed of projection is g 10 m...
- Q E planet A baseball pitcher can throw a fastball at a speed of 150 km hr What is the largest size spherical asteroid of density p 3 g cm 3...
- Q A particle of mass m is placed at the centre of a uniform spherical shell of mass 3 m and radius R The gravitational potential on the surface of the...
- Q stars A and B travel in circular orbit around their common centre of mass with radi R and R respectively as shown in figure The time for the star B...
- Q 6 89 If gravitational forces between a planet and a satellite is proportional to R 5 2 if R is the orbit radius Then the period of revolution of satellite...
- Q 6 41 A planet of mass Mmoves around the Sun along an ellipse so that its minimum distance from the Sun is equal to r and the maximum distance to...
- Q 3 A small moon of radius r and mass m is orbiting around a planet of r M in a circular orbit of radius R R r always keeping the...
- Q 4 A spaceship is launched radially away from the earth with the help of rocket When the spaceship acquires speed to the rocket used switched off As the spaceship proceeds...
- Q he surface Calculate 6 59 A body is projected horizontally near the surface of the earth with 1 5 times the orbital velocity Calculate the maximum height up to which...
- Q 6 79 A spaceship nears the Moon along a parabolic trajectory that almost touches the Moon s surface In order to transfer An into a circular orbit a retro engine...
- Q 6 66 The gravitational potential difference between the surface of planet and a point 20 m above the surface is 2 J kg If the gravitational field is uniform then...
- Q 42 Three particles A B and C of equal mass m ea are placed at the corners of an equilateral triang of side a Force on C is 1 2...
- Q 6 86 Four particles each of mass M move along a circle of radius R under the action of their mutual gravitational attractional Find the speed of each particle Ans...
- Q Two identical balls are set into motion simultaneously from equal heights h While the ball A is thrown horizontally with velocity v the ball B is just released to fall...
- Q 7 A stone is dropped from the top of tall cliff and n seconds later another stone is thrown vertically downwards with a velocity u Then the second stone overtakes...
- Q A satellite is moving in a circular orbit around earth at a height R above earth surface R being radius of earth It s velocity should be increased to k...
- Q 2 Find the height from the surface of the moon where the value of g is equal to the value of g at a height of 57 600 km from...
- Q A body of mass 5 kg is suspended by a spring balance on an inclined plane as shown in figure The spring balance reading is g 10 m s 5...
- Q What is the minimum eccentricity of an ellipse that can rest on an inclined plane of angle a with the area vector being perpendicular to the line of greatest slope...
- Q 6 A particle of mass m is rotating in a circular orbit of radius r under the action of gravity in the presence of another stationary particle of very large...
- Q In the figure the block B of mass m starts from rest at the toop of a wedge W of mass M A surfaces are without firction W can slide...
- Q A satellite of mass m is in a circular orbit of radius 2R about the earth How much energy is required to transfer it to a circular orbit of radius...
- Q Two satellite A and B having ratio of masses 3 1 are in circular orbits of radius r and 4r Calculate the ratio of total mechanical energies of A to...
- Q 28 A point mass m is placed inside a spherical shell of radius R and mass M at a distance from the centre of 2 R the shell The gravitational...
- Q A small object mass m falls freely from rest under gravity from a height h and strikes obliquely Fixed smooth inclined plane as shown in figure The impact is elastic...
- Q 38 Two spheres of masses m and radius a are in contact in space minimum distance of this system from Earth is this minimum distance is called Rochie limit M...
- Q A geostationary satellite is orbiting around an arbitary planet P at a height of 11R above the surface of P R being the radius of P The time period of...
- Q 4 A planet has same density and same acceleration due to gravity as of earth and universal gravitational constant G is twice of earth The ratio of their radius a...
- Q The figure shows a small ball with a mass of m attached to one end of an in extensible thread whose other end is connected to a 2 fixed point...
- Q At what height the gravitational field reduces by 75 the gravitational field at the surface of earth a R b 2R c 3R d 4R where R is the radius...
- Q A d J 34 P r is magnitude of physical quantity as a function of r distance from centre of spherical distribution of radius R Match the following columns and...
- Q Two satellites of earth S and S2 are moving in the same orbit The mass of S is four times the mass of S Which one of the following statements...
- Q Two bodies of masses mand Mare placed at distance d apart The gravitational potential V at the position where the gravitational field due to them is zero Vis G Ov...
- Q A comet travels around sun in elliptical orbit Its mass is 105 kg When it is 2 5 x 1010 m away its speed is 2 x 10 m s...
- Q Que 9 A rocket is launched straight up from the surface of the earth When its height is one fourth of the radius of the earth its fuel finished The...
- Q Which of the following statements is true about acceleration due to gravity by Earth g increases in moving away from the centre if r R g decreases in moving away...
- Q The figure shows elliptical orbit of a planet m about the sun S The shaded area SCD is twice the shaded area SAB If t be the time for the...
- Q A rocket starts vertically upwards with speed vo Choose the correct option s R is the radius of the earth a Speed v at a height h is given by...
- Q d C and A are the kinetic and potential energies and B the total energy of the satellite 69 Two satellites of earth S and S are moving in the...
- Q A geostationary satellite is at a height h above the surface of earth If earth radius is R 2 R a The minimum colatitude on earth upto which the satellite...
- Q 1 The additional kinetic energy to be provided to a satellite of mass m revolving around a planet of mass M to transfer it from a circular orbit of radius...
- Q Two bodies each of mass M are kept fixed with a separation 2L A particle of mass m is projected from the midpoint of the line joining their centres perpendicular...
- Q Two particles of equal mass m go round a circle of radius R under the action of their mutual gravitational attraction The speed of each particle is O ZAR 1...
- Q here are three planets in circular orbits around a fixed star at distances a 4a and 9a espectively in same sense say anticlockise At time t 0 the star and...
- Q c 3 57 x 10 m d 3 57 x 10 m WEIGHTLESSNESS An astronaut experiences weightlessness in a space satellite It is because a the gravitational force is small...
- Q 18 Two spheres each of mass M and radius R are separated by a distance of r The gravitationa potential at the midpoint of the line joining the centres of...
- Q height he can jump a Im b 0 8 m c 0 5 m d 1 25 m 36 If the mass of sun were ten times smaller and gravitational...
- Q 1 Acceleration due to gravity everywhere on the equator of a spherical asteroid of radius R is go A spherical cavity with its centre in the equatorial plane inside the...
- Q Q 85 At a certain angular velocity objects placed at equator loose contact with earth s surface Find the corresponding height of the geostationary satellite a 6400 kms b 3200...
- Q For technology project a student has built a vehicle of total mass 5 kg that moves itself As shown in the figure it runs on four light wheels A reel...
- Q A particle is projected from a point A which is at a distance 8R from the centre of the earth and with speed V in a direction making 30 with...
- Q A tunnel is dug along the diameter of the earth There is a particle of mass m at the centre of the tunnel Find the minimum velocity given to the...
- Q In order to shift a body of mass m from a circular orbit of radius 2R to a higher orbit of radius 4R around the earth Where R is radius...
- Q With what angular velocity the earth should spin in order that a body lying at 60 latitude may become weightless R Radius of earth g acceleration due to gravity on...
- Q A small satellite of M and radius a revolves around a heavy planet M in a circular orbit such that it always faces the planet during its revolution The closest...
- Q Section I Straight Objective Type This section contains 5 multiple choice questions Each question has 4 choices a b c and d out of which ONLY ONE is correct 1...
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