Physics MCQs Gravitation work And Energy

Physics MCQs Gravitation work And Energy: Are you looking to enhance your understanding of key physics concepts? Our comprehensive collection of MCQs on Gravitation, Work, and Energy offers an excellent way to test and refine your knowledge. These carefully crafted questions cover essential topics and provide insightful explanations to help you grasp the intricacies of these fundamental principles. Ideal for students preparing for exams or anyone keen on mastering physics, this resource allows you to challenge yourself and track your progress. Dive into our detailed MCQs and gain a deeper appreciation of how gravitation, work, and energy shape the physical world around us. Explore now to boost your physics skills and confidence!

Below are the Physics MCQs Gravitation work And Energy:

 Gravitation work and Energy MCQs:

1➤ Earth's gravitational force of attraction vanishes at:

ⓐ 6400 km
ⓑ 42300 km
ⓒ Infinity
ⓓ 1000 km

➤ Infinity

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2➤ Value of G increases with the:

ⓐ Increase in mass of the body
ⓑ Increase in altitude
ⓒ Decrease in altitude
ⓓ None of the above

➤ Decrease in altitude

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3➤ The value of g at a height on Earth's radius above the surface of the Earth is:

ⓐ 2 g
ⓑ 1/3 g
ⓒ 12 g
ⓓ 1/4 g

➤ 1/4 g

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4➤ The value of g on moon's surface is 1.6 ms. What will be the weight of a 100 kg body on the surface of the moon?

ⓐ 100 N
ⓑ 1000 N
ⓒ 160 N
ⓓ 1600 N

➤ 160 N

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5➤ The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is:

ⓐ 850 km
ⓑ 6400 km
ⓒ 1000 km
ⓓ 42,300 km

➤ 42,300 km

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6➤ The orbital speed of a low orbit satellite:

ⓐ Zero
ⓑ 800 ms¹
ⓒ 8 ms¹
ⓓ 8000 ms¹

➤ 8000 ms¹

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7➤ Concept of gravity was put up first by:

ⓐ Newton
ⓑ Einstein
ⓒ Hooke
ⓓ Galileo

➤ Newton

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8➤ The value of gravitational field strength near the surface of the Earth;

ⓐ 20 N kg¹
ⓑ 5 N kg
ⓒ 30 N kg¹
ⓓ 10 N kg¹

➤ 10 N kg¹

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9➤ The value of universal constant of gravitation:

ⓐ 6.673 x 10¹¹ Nm kg2
ⓑ 6.673 x 10¹¹ Nm²kg-2
ⓒ 6.673 x 10¹¹ Nm2kg2
ⓓ 6.673 x 10 Nmkg2

➤ 6.673 x 10¹¹ Nm²kg-2

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10➤ The value of Earth's approximately is: mass is:

ⓐ 6 x 10-24 kg
ⓑ 6.63 x 10-24 kg
ⓒ 6 x 1024 kg
ⓓ 6.63 x 1024 kg

➤ 6 x 1024 kg

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11➤ The value of g at the surface of moon is:

ⓐ 1.06 ms²
ⓑ 1.6 ms²
ⓒ 1.62 ms²
ⓓ 0.16 ms²

➤ 1.62 ms²

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12➤ Global positioning system consists of Earth satellite:

ⓐ 6
ⓑ 12
ⓒ 24
ⓓ 36

➤ 24

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13➤ The moon completes one rotation around the Earth in:

ⓐ 24 days
ⓑ 30 days
ⓒ 27.3 days
ⓓ 29.3 days

➤ 27.3 days

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14➤ The value of g at the altitude is:

ⓐ Less
ⓑ Equal
ⓒ Greater
ⓓ Zero

➤ Less

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15➤ The work done will be zero when the angle between the force and the distance is

ⓐ 45°
ⓑ 60°
ⓒ 90°
ⓓ 180°

➤ 90°

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16➤ If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be

ⓐ Maximum
ⓑ Minimum
ⓒ Zero
ⓓ None of these

➤ Zero

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17➤ If the velocity of a body becomes double, then its kinetic energy will

ⓐ Remain the same
ⓑ Become double
ⓒ Become four times
ⓓ Become half

➤ Become four times

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18➤ The work done in lifting a brick of mass 2 kg through a height of 5 m above ground will be

ⓐ 2.5 J
ⓑ 10 J
ⓒ 50 J
ⓓ 100 J

➤ 100 J

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19➤ The kinetic energy of a body of mass 2 kg is 25 J. its speed is

ⓐ 5 ms¹
ⓑ 12.5 ms¹
ⓒ 25 ms¹
ⓓ 50 ms¹

➤ 5 ms¹

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20➤ Which one of the following converts light energy into electrical energy?

ⓐ Electric bulb
ⓑ Electric generator
ⓒ Photocell
ⓓ Electric cell

➤ Electric generator

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21➤ When a body is lifted through a height h, the work done on it appears in the form of its:

ⓐ Kinetic energy
ⓑ Potential energy
ⓒ Elastic potential energy
ⓓ Geothermal energy

➤ Potential energy

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22➤ The energy stored in coal is

ⓐ Heat energy
ⓑ Kinetic energy
ⓒ Chemical energy
ⓓ Unclear energy

➤ Heat energy

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23➤ The energy stored in a dam is

ⓐ Potential energy
ⓑ Potential energy
ⓒ Kinetic energy
ⓓ Thermal energy

➤ Potential energy

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24➤ In Einstein's mass- energy equation, c is the

ⓐ Speed of sound
ⓑ Speed of light
ⓒ Speed of electron
ⓓ Speed of Earth

➤ Speed of light

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25➤ Rate of doing work is called

ⓐ Energy
ⓑ Torque
ⓒ Power
ⓓ Momentum

➤ Torque

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