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Point mass



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Q1. Two objects of different masses falling freely near the surface of moon would:

(a) Have different accelerations
(b) Undergo a change in their inertia
(c) Have same velocities at any instant
(d) Experience forces of same magnitude

Q2. An object is put in three liquids having different densities, one by one. The object floats with 1/9, 2/11 and 3/7 parts of its volume outside the surface of liquids of densities d1, d2 and d3 respectively. Which of the following is the correct order of the densities of three liquids?

(a) d1 > d2 > d3
(b) d2 > d3 > d1
(c) d1 < d2 < d3
(d) d3 > d2 > d1

Q3. An object having mass equal to 350 g occupies 200 cm3 of the space. When this object is thrown into a river what will be the condition of this object there? (Density of water = 1 g/ cm3)

(a) It will float on the surface of water
(b) It will float fully submerged in the liquid
(c) It will sink in the liquid
(d) It will float partially submerged in the liquid

Q4. Choose the correct unit for the relative density among the following:

(a) kg/cm
(b) unitless
(c) kg/cm
(d) kg/m3

Q5. A ball weighing 4 kg of density 4000 kgm-3 is completely immersed in water of density103 kgm-3. What will be the buoyant force acting on it?

(a) 100 N
(b) 10 N
(c) 1600N
(d) 16 N

Q6. Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be:

(a) 1/4 times
(b) 4 times
(c) 1/2 times
(d) Unchanged

Q7. A stone is released from the top of a tower of height 19.6 m. Then its final velocity just before touching the ground will be:

(a) 384.16 m/ s
(b) 196 m/s
(c) 19.6 m/s
(d) 3841.4 m/s

Q8. The earth and the moon are attracted to each other by gravitational force. The earth attracts the moon with a force that is:

(a) More than that exerted by the moon
(b) Same as that exerted by the moon
(c) Less than that exerted by the moon
(d) Not related to that exerted by the moon

Q9. An apple falls from a tree because of the gravitational attraction between the earth and the apple. If F1 is the magnitude of the force exerted by the earth on the apple and F2 is the magnitude of the force exerted by the apple on the earth, then

(a) F1 is very much greater than F2
(b) F2 is very much greater than F1
(c) F1 and F2 are equal
(d) F1 is only a little greater than F2

Q10. The mass of moon is about 0.012 times that of the earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:

(a) Same as that on the earth
(b) About one-fifth of that on the earth
(c) About one-sixth of that on the earth
(d) About one-fourth of that on the earth


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Modified 21 Year Ago

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423 views

Modified 206 Year Ago

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Severity: Notice

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Backtrace:

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Function: require_once

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409 views

Modified 206 Year Ago

A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'name' of non-object

Filename: views/index.php

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Backtrace:

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405 views

Modified 223 Year Ago

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Severity: Notice

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File: /home/u866816117/domains/testprepkart.com/public_html/free-preparation/index.php
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Function: require_once

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392 views

Modified 19 Year Ago

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Severity: Notice

Message: Trying to get property 'name' of non-object

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Backtrace:

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File: /home/u866816117/domains/testprepkart.com/public_html/free-preparation/index.php
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Function: require_once

0 votes
0 Answer
391 views

Modified 27 Year Ago

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Severity: Notice

Message: Trying to get property 'name' of non-object

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Backtrace:

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