question_answer1) If a rock is brought from the surface of the moon,
A) Its mass will change
B) Its weight will change but not mass
C) Both mass and weight will change
D) Its mass and weight both will remain same
View Answer play_arrowquestion_answer2) A body is weighed at the poles and then at the equator The weight
A) at the equator will be greater than at the poles
B) at the poles will be greater than at the equator
C) at the poles will be equal to the weight at the equator
D) depends upon the object
View Answer play_arrowA) It is a freely falling body.
B) It is moving with constant speed.
C) It is acted upon by a force directed away from the centre of the earth which counter balances the gravitational pull
D) Its angular momentum remains constant
View Answer play_arrowA) positive
B) negative
C) zero
D) may be positive or negative depending upon its initial velocity
View Answer play_arrowquestion_answer5) \[SI\] unit of g is-
A) \[{{m}^{2}}/s\]
B) \[\text{m}/{{\text{s}}^{\text{2}}}\]
C) \[\text{s}/{{\text{m}}^{\text{2}}}\]
D) \[\text{m}/\text{s}\]
View Answer play_arrowquestion_answer6) \[SI\]unit of G is
A) \[{{N}^{2}}-{{m}^{2}}/kg\]
B) \[N-{{m}^{2}}/kg\]
C) \[N-m/kg\]
D) \[N-{{m}^{2}}/k{{g}^{2}}\]
View Answer play_arrowquestion_answer7) Choose the correct statement of the following:
A) All bodies repel each other in this universe.
B) Our earth does not behave like a magnet.
C) Acceleration due to gravity is\[\text{8}.\text{9 m}/{{\text{s}}^{\text{2}}}\].
D) All bodies fall at the same rate in vacuum.
View Answer play_arrowquestion_answer8) Maximum weight of a body is
A) at the centre of the earth
B) inside the earth
C) on the surface of the earth
D) above the surface of earth
View Answer play_arrowA) \[\frac{1}{4}\]times
B) 4 times?
C) \[\frac{1}{2}\]times
D) 2 times
View Answer play_arrowquestion_answer10) A body falls freely towards the earth with
A) uniform speed
B) uniform velocity
C) uniform acceleration
D) none of these
View Answer play_arrowA) \[\frac{M}{6}\]
B) \[M\]
C) \[M+6\]
D) zero
View Answer play_arrowA) is a vector quantity
B) of a body in interplanetary space is maximum
C) increases when the bodies go up
D) none of these
View Answer play_arrowquestion_answer13) The value of g near the earth's surface is
A) \[\text{8}.\text{9 m}/{{\text{s}}^{\text{2}}}\]
B) \[\text{8}.\text{9 m}/\text{s}\]
C) \[\text{9}.\text{8 m}/{{\text{s}}^{\text{2}}}\]
D) \[\text{9}.\text{8 m}/\text{s}\]
View Answer play_arrowquestion_answer14) A geostationary satellite
A) moves faster than the near earth satellite
B) has a time period less that of a near earth satellite
C) revolves about the polar axis
D) is stationary in space
View Answer play_arrowquestion_answer15) The force of gravitation between two bodies depend upon
A) their separation
B) gravitational constant
C) product of their masses
D) all of these
View Answer play_arrowquestion_answer16) When an object is thrown up, the force of gravity
A) acts in the direction of the motion
B) acts in the opposite direction of the motion
C) remains constant as the body moves up
D) increases as the body moves up
View Answer play_arrowquestion_answer17) The force of gravitation exists
A) every where in the universe
B) at the surface of the earth only
C) inside the earth only
D) at the surface of the moon only
View Answer play_arrowquestion_answer18) 1 kg wt is equal to
A) 9.8 N
B) 980 N
C) 98 N
D) none of these
View Answer play_arrowquestion_answer19) 1 kg wt is equal to
A) 980 dynes
B) 9.80 dynes
C) 98 dynes
D) none of these
View Answer play_arrowquestion_answer20) The value of G does not depend on
A) nature of the interacting bodies
B) size of the interacting bodies
C) mass of the interacting bodies
D) all of these
View Answer play_arrowquestion_answer21) The ratio of SI units to CGS units of G is
A) \[\text{1}{{0}^{\text{3}}}\]
B) \[\text{1}{{0}^{\text{2}}}\]
C) \[\text{1}{{0}^{-\text{2}}}\]
D) \[\text{1}{{0}^{-\text{3}}}\]
View Answer play_arrowquestion_answer22) The ratio of SI units to CGS units of g is
A) \[\text{1}{{0}^{\text{2}}}\]
B) 10
C) \[\text{1}{{0}^{-\text{1}}}\]
D) \[\text{1}{{0}^{-\text{2}}}\]
View Answer play_arrowA) \[{{m}^{3}}k{{g}^{-1}}{{s}^{-2}}\]
B) \[{{m}^{3}}k{{g}^{-2}}{{s}^{-1}}\]
C) \[\text{m k}{{\text{g}}^{-\text{3}}}\text{ }{{\text{s}}^{-\text{1}}}\]
D) \[{{\text{m}}^{\text{2}}}\text{ k}{{\text{g}}^{-\text{3}}}\text{ }{{\text{s}}^{-\text{2}}}\]
View Answer play_arrowA) \[\text{1}\text{.3}0\text{4 }\times \text{ 1}{{0}^{\text{4}}}\text{m}/\text{sec}\]
B) \[\text{13}.0\text{4 }\times \text{1}{{\text{0}}^{4}}\text{m}/\text{sec}\]
C) \[\text{1}\text{.3}0\text{4 }\times \text{1}{{\text{0}}^{\text{6}}}\text{m}/\text{sec}\]
D) \[1.304\,\times {{10}^{2}}m/sec\]
View Answer play_arrowquestion_answer25) The value of gravitational intensity of the centre of the earth is
A) 1
B) infinity
C) zero
D) none of these
View Answer play_arrowA) 2
B) 4
C) 8
D) 8
View Answer play_arrowquestion_answer27) The acceleration due to gravity
A) has the same value everywhere in space
B) has the same value everywhere on the earth
C) varies with the latitude on the earth
D) is greater on the moon due to its smaller diameter
View Answer play_arrowquestion_answer28) \[SI\] unit of weight is
A) kg wt
B) N
C) g wt
D) none of these
View Answer play_arrowquestion_answer29) Gravitational force which acts on 1 kg is
A) 9.8 N
B) \[\frac{1}{9.8}N\]
C) 980N
D) none of these
View Answer play_arrowA) measured by a spring balance
B) measured by a beam balance
C) measured in kg
D) a scalar quantity
View Answer play_arrowA) 4.8 hours
B) \[48\sqrt{2}\] hours
C) 24 hours
D) \[24\sqrt{2}\] hours
View Answer play_arrowquestion_answer32) If a satellite is orbiting close to the surface of the earth, then its speed is
A) \[\sqrt{2}Rg\]
B) \[Rg\]
C) \[\sqrt{\frac{Rg}{2}}\]
D) \[\sqrt{Rg}\]
View Answer play_arrowquestion_answer33) The weight of an object
A) is the quantity of the matter it contains
B) refers to its inertia
C) is the same as its mass but is expressed in different unit
D) is the force with which it is attracted towards the earth
View Answer play_arrowA) \[F\propto {{r}^{4}}\]
B) \[F\propto {{r}^{6}}\]
C) \[F\propto {{r}^{2}}\]
D) \[F\propto \frac{1}{{{r}^{2}}}\]
View Answer play_arrowA) 1624 km
B) 2424 km
C) 2624km
D) 2826km
View Answer play_arrowA) 11 km/sec
B) 22 km/sec
C) 33 km/sec
D) 16.5 km/sec
View Answer play_arrowquestion_answer37) The gravitational pull exerted by the earth on a body is called its
A) true weight
B) mass
C) gravitational mass
D) inertial mass
View Answer play_arrowquestion_answer38) A weighing machine measures
A) weight only
B) mass only
C) mass and weight
D) none of these
View Answer play_arrowA) \[\frac{1}{9}m\]
B) \[\frac{1}{10}m\]
C) \[\frac{1}{11}m\]
D) \[\frac{10}{11}m\]
View Answer play_arrowA) \[0.\text{414R}\]
B) R
C) 2R
D) 3.5R
View Answer play_arrowA) \[\frac{4\pi G}{3gR}\]
B) \[\frac{3\pi R}{4gG}\]
C) \[\frac{3g}{4\pi RG}\]
D) \[\frac{\pi g}{12RG}\]
View Answer play_arrowquestion_answer42) The apparent weight of a body weighing M kg Wt during free fall is
A) less than M kg wt
B) more than M kg wt
C) equal to M kg wt
D) zero
View Answer play_arrowA) \[mM=2\]
B) \[m=\frac{M}{2}\]
C) \[M={{m}^{2}}\]
D) none of these
View Answer play_arrowA) \[\text{6}.\text{6 }\times \text{ 1}{{0}^{9}}\text{ joule}\]
B) \[-\text{ 6}.\text{6 }\times \text{ 1}{{0}^{\text{9}}}\text{ joule}\]
C) \[\text{6}.\text{6 }\times \text{ 1}{{0}^{-\text{9}}}\text{ joule}\]
D) \[-\text{ 6}.\text{6 }\times \text{ 1}{{0}^{-\text{9}}}\text{ joule}\]
View Answer play_arrowA) \[+\frac{k}{r}\]
B) \[-\frac{k}{2r}\]
C) \[-\frac{\text{ 2K}}{r}\]
D) \[+\frac{\text{ K}}{{{r}^{2}}}\]
View Answer play_arrowA) 2.83 km/s
B) 3.28 km/sec
C) 6.68 km/s
D) 8.32 km/sec
View Answer play_arrowA) \[\frac{g}{2}\]
B) \[\frac{g}{3}\]
C) \[\frac{g}{7}\]
D) \[\frac{g}{5}\]
View Answer play_arrowA) \[{{r}_{1}}^{\frac{3}{2}}\]
B) \[{{r}_{2}}^{\frac{3}{2}}\]
C) \[\frac{{{({{r}_{1}}+{{r}_{2}})}^{\frac{3}{2}}}}{2}\]
D) \[\frac{{{({{r}_{1}}-{{r}_{2}})}^{\frac{3}{2}}}}{2}\]
View Answer play_arrowA) 16 joules
B) 160 joules
C) 32 joules
D) 320 joules
View Answer play_arrowA) 2.35 hours
B) 23.5 hours
C) 3.25 hours
D) 32.5 hours
View Answer play_arrowA) \[\text{2}.\text{15 }\times \text{ 1}{{0}^{\text{3}}}\text{ rad}/\text{sec}\]
B) \[\text{2}.\text{25 }\times \text{ 1}{{0}^{-\text{3}}}\text{ rad}/\text{sec}\]
C) \[\text{1}.\text{25 }\times \text{ 1}{{0}^{\text{3}}}\text{ rad}/\text{sec}\]
D) \[\text{1}.\text{25 }\times \text{ 1}{{0}^{-\text{3}}}\text{ rad}/\text{sec}\]
View Answer play_arrowquestion_answer52) The gravitational intensity is denoted by
A) \[g\]
B) G
C) \[E\]
D) none of these
View Answer play_arrowA)
B)
C)
D)
View Answer play_arrowA) 889N
B) 8.89 N
C) 8889N
D) 88.9 N
View Answer play_arrowA) \[{{M}_{m}}=\frac{1}{6}\]
B) \[{{M}_{m}}={{M}_{e}}\]
C) \[{{M}_{m}}=\sqrt{{{M}_{e}}}\]
D) \[{{M}_{m}}=6{{M}_{e}}\]
View Answer play_arrowA) 30R
B) 15R
C) 6R
D) 5R
View Answer play_arrowA) \[~\text{2}.\text{45m}{{\text{s}}^{-\text{2}}}\]
B) \[\text{4}.\text{9m}{{\text{s}}^{-\text{2}}}\]
C) \[\text{9}.\text{8m}{{\text{s}}^{-\text{2}}}\]
D) \[\text{19}.\text{6m}{{\text{s}}^{-\text{2}}}\]
View Answer play_arrowA) \[gR\]
B) \[\sqrt{gR}\]
C) \[\sqrt{\frac{g}{R}}\]
D) \[\frac{g}{R}\]
View Answer play_arrowA) Weight of the body is zero
B) Mass of the body is zero
C) Both mass and weight becomes zero
D) Neither the weight nor the mass is zero.
View Answer play_arrowquestion_answer60) Weightlessness produced in a spaceship is due to
A) absence of inertia
B) absence of gravity due to earth
C) absence of accelerating force
D) free fall of the spaceship
View Answer play_arrowquestion_answer61) Where is the intensity of the gravitational field of the earth maximum?
A) Centre of earth
B) Equator
C) Poles
D) Same everywhere
View Answer play_arrowA) 1N
B) 36 N
C) \[\frac{1}{6}\]N
D) 6N
View Answer play_arrowA) increase
B) decrease
C) remain unchanged
D) sometimes decrease and sometimes increase
View Answer play_arrowA) It is freely falling body
B) It experiences no acceleration
C) It is moving with constant speed
D) Its angular momentum is constant
View Answer play_arrowquestion_answer65) Time period of simple pendulum in a satellite is
A) infinite
B) (6) zero
C) \[\text{2 sec}\]
D) cannot be calculated
View Answer play_arrowA) \[\text{2}.\text{86 m}/{{\text{s}}^{\text{2}}}\]
B) \[\text{1}.\text{65 m}/{{\text{s}}^{\text{2}}}\]
C) \[\text{8}.\text{65 mi}{{\text{s}}^{\text{2}}}\]
D) \[\text{5}.\text{16 m}/{{\text{s}}^{\text{2}}}\]
View Answer play_arrowquestion_answer67) The acceleration due to gravity is
A) It is more at the equator than at the poles
B) It is not effected by the rotation of the earth
C) It is effected by the rotation of the earth
D) It is not effected by the latitude
View Answer play_arrowA) \[x=h\]
B) \[x=2h\]
C) \[x=\frac{h}{2}\]
D) \[x=\frac{h}{3}\]
View Answer play_arrowA) 2
B) 3
C) 4
D) 5
View Answer play_arrowquestion_answer70) Moon has no atmosphere because
A) it is a satellite of earth
B) it does not have population
C) it is colder than earth
D) r.m.s velocity of all the gases is more than the escape velocity from its surface
View Answer play_arrowA) It will continue to move with the same speed along the original orbit of spacecraft
B) It will move with the same speed, tangentially to the spacecraft
C) It will fall down to the earth gradually
D) It will go very far in space
View Answer play_arrowA) 80 N
B) 40 N
C) 20 N
D) 8N
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