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BPSC Prelims GS Practice Test - 05
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Subject: Science
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Question 1 of 5
1. Question
1 pointsWhat is measured in Parsec?
Correct
Parsec, unit for expressing distances to stars and galaxies, used by professional astronomers.
Parsec (pc) is an astronomical unit of length equal to the distance at which a baseline of one astronomical unit subtends an angle of one second of arc.
1 parsec = 3.085677×1016m=3.26 light years.
Incorrect
Parsec, unit for expressing distances to stars and galaxies, used by professional astronomers.
Parsec (pc) is an astronomical unit of length equal to the distance at which a baseline of one astronomical unit subtends an angle of one second of arc.
1 parsec = 3.085677×1016m=3.26 light years.
Unattempted
Parsec, unit for expressing distances to stars and galaxies, used by professional astronomers.
Parsec (pc) is an astronomical unit of length equal to the distance at which a baseline of one astronomical unit subtends an angle of one second of arc.
1 parsec = 3.085677×1016m=3.26 light years.
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Question 2 of 5
2. Question
1 pointsWhich of the following statements are true about acceleration due to gravity (denoted as g)?
Correct
Variation in g :
g is maximum at poles
g is minimum at equator
g decreases due to rotation of earth
value of g decreases with height or depth from earth’s surfaceIncorrect
Variation in g :
g is maximum at poles
g is minimum at equator
g decreases due to rotation of earth
value of g decreases with height or depth from earth’s surfaceUnattempted
Variation in g :
g is maximum at poles
g is minimum at equator
g decreases due to rotation of earth
value of g decreases with height or depth from earth’s surface -
Question 3 of 5
3. Question
1 pointsWhich of the following is a scalar quantity?
Correct
Electric current is a scaler quantity, because it does not follow the laws of vectors addition, i.e., the angle between the wires carrying the current does not affect the total current in the circuit.
Incorrect
Electric current is a scaler quantity, because it does not follow the laws of vectors addition, i.e., the angle between the wires carrying the current does not affect the total current in the circuit.
Unattempted
Electric current is a scaler quantity, because it does not follow the laws of vectors addition, i.e., the angle between the wires carrying the current does not affect the total current in the circuit.
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Question 4 of 5
4. Question
1 pointsApproximately how much distance per minute the Earth is rotating?
Correct
Earth’s equatorial radius is 6378 km and its polar radius is 6357 km. We have assumed it to be 6400 km for our calculation.
Distance covered by rotation of Earth in 1 minute = 2πr / t = 2 x 3.14 x 6400 / 24 x 60 ≈ 27.91Incorrect
Earth’s equatorial radius is 6378 km and its polar radius is 6357 km. We have assumed it to be 6400 km for our calculation.
Distance covered by rotation of Earth in 1 minute = 2πr / t = 2 x 3.14 x 6400 / 24 x 60 ≈ 27.91Unattempted
Earth’s equatorial radius is 6378 km and its polar radius is 6357 km. We have assumed it to be 6400 km for our calculation.
Distance covered by rotation of Earth in 1 minute = 2πr / t = 2 x 3.14 x 6400 / 24 x 60 ≈ 27.91 -
Question 5 of 5
5. Question
1 pointsWhich one of the following quantities does not have unit?
Correct
strain is a dimensionless and unitless quantity.
Incorrect
strain is a dimensionless and unitless quantity.
Unattempted
strain is a dimensionless and unitless quantity.
