General Science

Q2241.Assertion (A): A man standing on a completely frictionless surface can propel himself by whistling. Reason (R): If no external force acts on a system, its momentum cannot change. Code

Q2242.Consider the following statement and conclusions which can be drawn from it. Choose the correct conclusion. Statement: In starting a loaded cart, one has to push harder than to keep it moving. Conclusion

Q2243.Consider the following statements. A 4-wheel vehicle moving in a sharp circular path at high speed will 1. Overturn about its outer wheels 2. Overturn about its inner wheels 3. Skid outwards 4. Skid inwards Which of these statements are correct?

Q2244.Who propounded the universal law of gravitation?

Q2245.Astronauts in space cannot stand erect. This is because, in space

Q2246.Who among the following anticipated Newton by declaring that all things gravitate to the Earth?

Q2247.Who gave the theory of gravity?

Q2248.If an apple is released from an orbiting spaceship, it will

Q2249.The Leaning Tower of Pisa does not fall because

Q2250.If the distance between the Earth and the Sun were twice what it is now, the gravitational force exerted on the Earth by the Sun would be

Q2251.If an object is falling from above, its weight remains

Q2252.If pieces of equal size of woods, wax and iron falling from a same height, which one will reach the surface of the Earth first?

Q2253.The two balls of iron and wood of same weight dropped from the same height, then

Q2254.Two balls A and B are of 10 kg and 1 kg, respectively. They are dropped simultaneously from a height of 20 m. Which of the following is correct?

Q2255.The weight of human body is

Q2256.A ball is dropped from the top of a high building with a constant acceleration of 9.8 m/s2. What will be its velocity after 3 s?

Q2257.If the radius of the Earth were to shrink by one percent, its mass remaining the same, the value of g on the Earth’s surface would

Q2258.The acceleration due to gravity of a destructive Earthquake will be

Q2259.The mass of a body on the Earth is 100 kg (acceleration due to gravity, ge = 10 m/s2). If acceleration due to gravity on the Moon is (ge = 106 m/s2), then the mass of the body on the Moon is

Q2260.Weightlessness is