Physics question and answers for May 12, 2024
- Q Two identical magnetic dipoles of magnetic moments 1 0 A m each placed at a separation of 2m with their axes perpendicular to each other The resultant magnetic field at...
- Q Question No 76 Single Correct A A The weight of a body at the centre of earth is A 9 8 ms 2 B C D 0 4 9 ms...
- Q hary observer in space observes a system of binary stars undergoing circular motion about their centre of mass Because the observer is in the plane of the motion and is...
- Q A tunnel is dug along a chord of the earth at a perpendicular distance R 2 from the earth s centre The wall of the tunnel may be assumed to...
- Q l stion 3 After traveling a distance of 20 m along a transmission line the voltage wave remains 13 of it s source amplitude What is the attenuation constant of...
- Q 22 When a maximum force of 3 N is applied on a body kept on rough inclined plane of shown in the figure then body remains stationary The maximum external...
- Q If Newton s inverse square law of gravitation had some dependence on radial distance other than which on of kepler s three laws of planetary motion would remain unchanged Olympiad...
- Q A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km Then the time period of a spy satellite orbiting a few hundred kilometers above the...
- Q Two bodies of mass m and M are revolving under the gravitational force of each other If they are moving in circular orbits of radii r and A respectively then...
- Q A planet of mass m revolves around the sun of mass M in an elliptical orbit The minimum and maximum distance of the planet from the sun are r r2...
- Q The figure shows an uniform slab of mass 7kg Find the moment of inertia about the axis normal to the plane of drawing and passing through the point O Given...
- Q GM 2R If the particle shown is the figure is projected with orbital speed vo projected such that time period of revolution is 8T then what is maximum distance of...
- Q What will be the acceleration due to gravity at R a point which is at the distance 4 from Earth s centre R is radius of earth go is acceleration...
- Q A body of mass m is projected horizontally just above the earth surface with velocity Vo ngR where R is the radius of earth If maximum height attained by the...
- Q QA planet of mass m is moving in an elliptical orbit round the sun of mass M If the maximum and minimum distances of the planet from the sun be...
- Q Question Two satellites are or biting Earth The path of one satellite has the equation x2 y2 56 250 000 The orbit of t he other satel Two satellites are...
- Q 3 A satellite is revolving around earth with orbital speed vo If it stops suddenly then the speed with which it will strike the surface of earth is ve is...
- Q A solid block of mass 2 kg is resting inside a cube as shown in Fig The cube is moving with a velocity v 51 23ms 1 If the coefficient...
- Q If the escape velocity for an object placed at the surface of the earth is ve then the escape velocity for the same object when projected from the point of...
- Q S on the pole of the earth its moment of inertia will 1 increase 2 decrease 3 remain unchanged 4 none of these 1 If the earth loses its atmosphere...
- Q A planet is revolving around the sun in elliptical orbit with a semi major axis of 4 x 108 km Find the speed of the planet in km sec when...
- Q Take the mean distance of the moon and the sun from the earth to be 0 4 x 106 km and 150 x 106 km respectively Their masses are 8...
- Q A satellite is revolving close to the surface of earth What additional velocity is to be imparted to this satellite in the direction of its instantaneous velocity such that it...
- Q Inside a fixed sphere of radius R and uniform R density p there is spherical cavity of radius 2 such that surface of the cavity passes through the centre of...
- Q A cavity of radius R 2 is made inside a solid sphere of radius R The centre of the cavity is located at a distance R 2 from the centre...
- Q The figure represents a solid uniform sphere of mass M and radius R A spherical cavity of radius r is at a distance a from the centre of the sphere...
- Q 20 A satellite is moving in a low nearly circular orbit around the earth Its radius is roughly equal to that of the earth s radius R By firing rockets...
- Q A satellite is moving around the earth with speed v in a circular orbit of radius r If the orbit radius is decreased by 1 its speed will MP PET...
- Q A thin uniform annular disc see figure of mass M has outer radius 4R and inner radius 3R The work required to take a unit mass from point P on...
- Q origin of co ordinate system lies at the centre of mass the sum of the moments of the masses of the system about the centre of mass a may be...
- Q In Fig 13 37 a particle A is fixed in placed at x 0 20 m on the x aixs and particle B with a mass 1 0 kg is...
- Q hree point masses each of mass m are kept at the corners of an equilateral triangle of side L The system rotates about the center of the triangle without any...
- Q 7 An open elevator is ascending with constant speed 10ms A ball is thrown vertically upwards by a boy on the lift respect to the elevator The time taken by...
- Q A satellite of mass m is launched vertically upwards with an initial speed u from the surface of the earth After it reaches height R R radius m of the...
- Q A spherical shell is cut into two pieces along a chord and separated by large distance as shown in figure For points A and B where E and V are...
- Q If a body is released from a point at a height equals to times the radius of the earth R its velocity equal reaching the surface of the earth is...
- Q A small particle is dropped from a height R in front of a narrow tunnel dug inside the earth along a diameter Let M be the mass of earth R...
- Q 4 Stoj Body is projected vertically upward from the surface of the earth with a velocity equal to half the escape velocity If R is radius of the earth the...
- Q SolveLancer Test Suppose a planet x has g 20 m s and planet y has g 5 m s A spaceship moves from y to x It has a mass...
- Q A satellite is revolving very close to the earth surface in a circular orbit has potential energy U Find the change in its mechanical energy if it is made to...
- Q A rectangular coil ABCD is hung from one hung from one side of a balance as shown in figure A 500 g mass is added to the other arm to...
- Q If the total energy of a satellite is negative it means O Satellite will escape along parabolic path O Satellite will escape along hyperbolic path Satellite will escape along linear...
- Q gestion No 8 stone weighs 50 N at an altitude equal to radius of earth The ratio of weight of stone on earth surface to that at depth of half...
- Q The diagram shows three concentric conducting spherical shells having radii R 2R and 3R The initial potential of each she is as mentioned in the figure If the inner most...
- Q A large number of identical point masses m are placed along x axis at x 0 1 2 4 The magnitude of gravitational force on mass at origin x 0...
- Q A coil of single turn is wrapped around a sphere of radius r and mass m The plane of the coil is parallel to the inclined plane and lies in...
- Q The tidal waves in the sea are primarily due to The atmospheric effect of the earth The gravitational effect of the moon on the earth Solar radiation on the earth...
- Q 1 In the following four i Time period of revolution of a satellite just above the earth s surface T ii Time period of oscillation of ball inside the tunnel...
- Q A spherical planet of radius R has spherically symmetrical distribution of mass density varying as square of the distance from the centre from zero at centre to maximum value po...
- Q A stone weighs 50 N at an altitude equal to radius of earth The ratio of weight of stone on earth surface to that at depth of half of radius...
- Q A planet moving around the sun sweeps area A in 3 days A2 in 6 days and A3 in 2 days The relation between A A2 and A3 is A...
- Q A particle is projected from the ground with a velocity V 52 203 ms The maximum height attained and the range of the particle are respectively given by use g...
- Q If the total energy of a satellite is negative it means Satellite will escape along parabolic path Satellite will escape along hyperbolic path Satellite will escape along linear path Satellite...
- Q If mass of a planet is M radius is x then the work to be don to slowly take a 2 kg mass from surface to a height 4x is...
- Q If the particle shown is the figure is GM V 2R it returns after time T If it is projected such that time period of revolution is 8T then what...
- Q In reference to geostationary satellite which among the following is correct It moves in a plane containing Greenwich meridian It moves in a plane perpendicular to equatorial plane Its altitude...
- Q As we move from centre of earth to a certain height above the surface the acceleration due to gravity Continuously decreases First decreases then increases First increases then decreases Continuously...
- Q The periods of revolutions of two satellites are 4 hours and 16 hours The ratio of their radii will be 16 8 24 1 346
- Q Question 20 A ball of mass m is fired vertically upwards from the surface of the earth with velocity nue where ve is the escape velocity and n 1 Neglecting...
- Q 71 A particle would take a time t to move down a straight tunnel from the surface of earth supposed to be a homogeneous sphere to its centre If magnitus...
- Q 14 Two planets have same density but different radii The acceleration due to gravity would be 1 Same on both planets 2 Greater on the smaller planet 3 Greater on...
- Q 20 x 10 Nm kg 2 M 6 x 1024 kg R 6400 km wherever required 3 An object A of mass of 10kg is balanced on a sensitive physical...
- Q SolveLancer Test Their is a planet of mass M around which a satellite revolve in an elliptical orbit and length of semi major axis is a and length of semi...
- Q 16 A particle is dropped in three tunnels ACB AEB and ADB through earth and takes time to reach at point B respectively t t2 and t3 A C E...
- Q A 10 kg block placed on a rough horizontal floor is being pulled by a constant force of 50 N Coefficien of kinetic friction between the block and the floor...
- Q SolveLancer Test Two planets X and Y orbit around sun in circular orbits Y completes 1 revolution around the sun in time t How many does X complete in time...
- Q For the path PQR in a conservative force field the amounts work done in carrying a body from P to Q and fror Q to Rare 5 Joule and 2...
- Q 59 Two asteroids heavenly bodies of equal masses revolve diametrically opposite to each other in a circle of radius 100 km If mass of each asteroid is 1010 kg then...
- Q II a A massless spring of rest length with no tension has a point mass m connected to one end and the other end fixed so the spring hangs in...
- Q The gravitational force between two identical spheres is given as 8x10 5 N The spheres are separated by a distance of 0 53m at the center What is the mass...
- Q A planet moves around the sun At a point P it is closest to sun at a distance d and has speed v At another point Q when it is...
- Q The reading of spring balance when measuring weight of body is double at pole compared to the reading taken at equator of planet X If the velocity of a point...
- Q A body projected vertically from the earth reaches a height equal to earth s radius before returning to the earth The power exerted by the gravitational force is greatest 1...
- Q The gravitational potential due to 6 particles each of mass 2 kg placed at vertices of a regular hexagon of side length 6 m at the centre of hexagon is...
- Q The depth d at which the value of acceleration due to gravity is th of the acceleration due to gravity at altitude R from 4 surface of the earth is...
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