When a body is moved from the equator to the north and south poles, its weight . . . . . . . .
A. decreases
B. remains the same
C. increases
D. increases on the South Pole and decreases on the North Pole
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A truck slips off the edge and falls to the ground in 0.8 seconds. Which height will the edge be from the ground? (g = 10m/s2 )
A. 320 m
B. 0.32 m
C. 32 m
D. 3.2 m
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Match the following.
List-I
List-II
a. Weight of a body is maximum
1. With increase in height from the surface of earth
b. Weight of a body decreased
2. Null point
c. Weight of a body increases
3. All the surface of earth
d. Weight of the body is zero
4. When body is moved from null point towards moon
A. a-1, b-2, c-3, d-4
B. a-4, b-3, c-2, d-1
C. a-3, b-1, c-4, d-2
D. a-3, b-4, c-1, d-2
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If a ball is thrown upwards with a velocity of 40 m/s, then what will be the magnitude of its displacement after 6 seconds? (g = 10 m/s2 )
A. 80 meters
B. 40 meters
C. 60 meters
D. 20 meters
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Weightlessness is
A. Zero gravity
B. When gravity decrease
C. In vacuum
D. None of the above
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The weight of human body is
A. maximum at the poles
B. same at every place on the earth's surface
C. maximum at the equator
D. more on the mountains than planes
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The weight of an object on Earth is 200 N and mass is 20 kg. What will be the value of gravitational acceleration?
A. 9.8 m/s-2
B. 10 m/s2
C. 9.8 m/s2
D. 10 m/s-2
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What is the value of acceleration due to gravity on the surface of the Earth?
A. 10.8 meters per square second
B. 9.8 centimeters per square second
C. 9.6 centimeters per square second
D. 9.8 meters per square second
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The value of 'g' decreases according to-
A. weight
B. height
C. mass
D. dimensions
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Assertion (A): The weight of human being on the Moon is 6 1 in comparison to Earth.
Reason (R): The Moon does not have gravity like Earth.
Select the answer.
A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C. (A) is true, but (R) is false
D. (A) is false, but (R) is true
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If the distance between two objects exceeds the normal distance by 6 times, the force of gravity will be-
A. 6 times
B. 36 times
C. 36 1 times
D. 12 times
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Who among the following anticipated Newton by declaring that all things gravitate to the Earth?
A. Aryabhatta
B. Varahamihira
C. Buddhagupta
D. Brahmagupta
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F = GM m/d2 what is G called in the formula?
A. Universal gravitational constant
B. Acceleration due to gravity
C. Gravitational force
D. High altitude
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Suppose the gravitational force changes inversely from the n power of the distance, then the time period of the planet revolving around the Sun in a circular orbit of R radius, will be proportional-
A. R-n
B. Rn
C. R 2 ( n + 1 )
D. R 2 ( n − 1 )
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Which of the following pairs is correctly matched?
List-I
List-II
a. Radium
1. Alexander Fleming
b. Penicillin
2. Madam Curie
c. X-ray
3. Edward Jenner
d. Smallpox
4. W.K. Roentgen
A. a-2, b-1, c-4, d-3
B. a-2, b-3, c-4, d-1
C. a-3, b-4, c-1, d-2
D. a-4, b-1, c-2, d-3
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A girl is swinging on a swing in sitting position. When the girl stands up, the period of the swing will
A. Be shorter
B. Be longer
C. Depends on the height of the girl
D. Not change
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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?
A. Wood
B. Wax
C. Iron
D. Reach at the same time
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Who gave the theory of gravity?
A. Charles Newton
B. Charles Babbage
C. Isaac Newton
D. John Adams
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Where is the center of gravity of an object hanging freely?
A. On the ground
B. Just below the point of hanging
C. At the center of the object
D. Just below the center of the object
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The Law of Gravitation was given by . . . . . . . .
A. Galileo Galilei
B. Isaac Newton
C. Albert Einstein
D. Charles Darwin
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