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Physics Questions - Engineering Entrance

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Question	Category
Consider two planets of radii R1 and R2 have the same density. The ratio of their accelerations due to gravity at the surface is	Physics
Suppose if radius of the Earth were increased by a factor of 5 and its mass remained the same, then the acceleration due to gravity on the Earth would	Physics
A planet is moving around the Sun in a circular orbit of circumference C. The work done on the planet by the gravitational force F of the Sun is	Physics
An reference frame attached to the Earth	Physics
A satellite is moving around the Earth in a circular orbit with a velocity V. If the gravitational force of the Earth were to suddenly disappear, then the satellite would fall towards the surface of the Earth.	Physics
A satellite is moving around the Earth in a circular orbit with a velocity V. If the gravitational force of the Earth were to suddenly disappear, then the satellite would fall towards the surface of the Earth.	Physics
If the escape velocity of a rocket from the surface of the Earth is ve , then the escape velocity of the same rocket from the surface of a planet whose acceleration due to gravity as well as radius are 3 times that of the Earth is	Physics
If the distance between two masses is increased by a factor of 5, the gravitational force of attraction between them will	Physics
emf of bichromate cells in volt's?	Physics
which condition pn junction in forward bioas?	Physics
How many dioad's in lcr circuit?	Physics
Why does the clear sky looks blue in colour?	Physics
Which instrument is used for measuring atmospheric pressure?	Physics
An example of an elemental-semiconductor is	Physics
The forbidden energy gap is maximum for	Physics
The number of systems into which crystals are classified are	Physics
For the formation of a neutron star the mass of the star (in solar mass) must be	Physics
The colour of an F star is	Physics
An example for a Jovian planet is	Physics
The period of Halley's comet is	Physics
The name of the largest Asteroid is	Physics
Parsec is a unit of	Physics
The farthest planet from the sun in the solar system is	Physics
Colour of a star depends on its	Physics
Pieces of rock revolving round the Sun between the orbits of Mass and Jupiter are called	Physics
Which of the following sentence is false for a particle moving in a circle with a constant angular speed ?	Physics
A stone of mass 1 kg is tied to a string 4m long and is rotated at constant speed of 40 m/s in a vertical cycle. The ratio of the tension at the top and the bottom is :	Physics
A heavy stone is hanging from a massless string of length 15 m is projected horizontally with a speed 147 m/s. The speed of the particle at the point where the tension in the string equals the weight of the particle is :	Physics
A boy whirls a stone in a horizontal circle of radius 1.5 m and height 2.0 m above ground level. The string breaks and the stone flies off tangentially and strikes ground after travelling a horizontal distance of 10 m. What is the magnitude of the centripetal acceleration of the stone while in circular motion ?	Physics
A small boy of mass m slides down from the top of the hemisphere of a radius R. The surface of block and hemisphere are frictionless. The height at which the body loses contact with with surface of the sphere is :	Physics
A stone of mass 1kg tied to a light inexhaustible string of length L= 10/3 is whirling in a circular path of radius L in vertical plane. If the ratio of the maximum tension to the minimum tension in the string is 4, what is the speed of the stone at the highest point of the circle :	Physics
The string of a pendulum is horizontal. The mass of the bob attached to it is m. Now the string is released. The tension in the string in the lowest position is :	Physics
A motor cyclist rides around the well with a round vertical wall and does not fall down while riding because :	Physics
The radial and tangential accelerations are represented by a1 and a2 respectively. The motion of the particle will be circular if :	Physics
A coin is placed on a rotating turnable just slips if it is placed at a distance of 8 cm from the centre. If angular velocity of the turnable is doubled, it will slip at a distance of :	Physics
A chain of 125 links is 1.25 m long and has a mass of 2 kg with the ends fastened together. It is set for rotating at 50 rev/sec, the centripetal force on each link is :	Physics
A stone of mass 1 kg is tied at one end of a string of length 1 m. It is whirled in a vertical circle at constant speed of 4 m/s. The tension in the string is 6 N when the stone is at :	Physics
what is formula of electrostatic charge?	Physics
The efficiency of a heat engine is 25%. If 50000 J of heat energy is applied to the engine, Find out the useful work done by the engine.	Physics
A car wheel is rotated to uniform angular acceleration about its axis. Initially its angular velocity is zero. It rotates through an angle x1 in the first two seconds, in the next two seconds, it rotates through an additional angle of x2. the ratio of x2/x1 is :	Physics
A particle of mass 100 g is tied to a string is rotated along a circle of radius 0.5 m. The breaking tension of string is 10 N. The maximum speed with which particle can be rotated without breaking the string is:	Physics
A stone is tied to the end of a 20 cm long string is whirled in a horizontal circle. If the centripetal acceleration is 9.8 m/s^2 its angular speed in rad/s is :	Physics
Two toy cars of masses m1 and m2 are moving along the circular path of radii r1 and r2. They cover equal distance in equal times. The ratio of angular velocities of two cars will be :	Physics
The wheel of a toy car rotates about a fixed axis. It slows down from 400 rps in 2 s. Then its angular retardation in rad/s2 is :	Physics
When a sample pendulum is rotated in a vertical plane with constant angular velocity, centripetal force is :	Physics
In an atom two electrons move round the nucleus in circular orbits of radii R and 4R respectively. The ratio of time taken for one revolution is :	Physics
A bucket full of water is rotated in a vertical circle of radius R. If the water does not split out, the speed of the bucket at the top most point will be :	Physics
A national roadway bridge across a canal is in the form of an arc of a circle of radius 49 cm.What is the maximum speed with which a car can move without leaving the ground at the highest point :	Physics
Two planets of masses m1 and m2 (m1>m2)are revolving around the sun in circular orbits of radii r1 and r2(r1>r2) respectively. The velocities of the planet be v1 and v2 respectively. Which of the following statements are true.	Physics
When a body moves with a constant speed in a circular path then :	Physics

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