Physics Syllabus (JEE Main)
Q. What is the unit of magnetic field strength in the SI system?
A.
Tesla
B.
Newton
C.
Coulomb
D.
Volt
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Solution
The unit of magnetic field strength is the Tesla (T).
Correct Answer: A — Tesla
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Q. What is the unit of magnetic field strength?
A.
Tesla
B.
Newton
C.
Coulomb
D.
Volt
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Solution
The unit of magnetic field strength is the Tesla (T), which is defined as one weber per square meter.
Correct Answer: A — Tesla
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Q. What is the unit of magnetic flux?
A.
Weber
B.
Tesla
C.
Henry
D.
Ampere
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Solution
The unit of magnetic flux is the Weber (Wb), which is defined as the amount of magnetic field passing through a given area.
Correct Answer: A — Weber
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Q. What is the unit of mass in the SI system?
A.
Gram
B.
Kilogram
C.
Pound
D.
Ounce
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Solution
The SI unit of mass is the kilogram.
Correct Answer: B — Kilogram
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Q. What is the unit of power in the International System of Units (SI)?
A.
Joule
B.
Watt
C.
Newton
D.
Pascal
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Solution
The unit of power in the SI system is the Watt, which is defined as one Joule per second.
Correct Answer: B — Watt
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Q. What is the unit of power in the SI system?
A.
Joule
B.
Watt
C.
Newton
D.
Pascal
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Solution
The unit of power in the SI system is the Watt, which is defined as one Joule per second.
Correct Answer: B — Watt
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Q. What is the unit of pressure in the SI system?
A.
Pascal
B.
Bar
C.
Torr
D.
Atmosphere
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Solution
The SI unit of pressure is Pascal (Pa), defined as one newton per square meter (N/m²).
Correct Answer: A — Pascal
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Q. What is the unit of resistance in the SI system?
A.
Volt
B.
Ampere
C.
Ohm
D.
Watt
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Solution
The unit of resistance in the SI system is the Ohm (Ω).
Correct Answer: C — Ohm
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Q. What is the unit of resistance?
A.
Volt
B.
Ampere
C.
Ohm
D.
Watt
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Solution
The unit of resistance is Ohm, which is defined as the resistance between two points when a constant potential difference of one volt produces a current of one ampere.
Correct Answer: C — Ohm
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Q. What is the unit of resistivity?
A.
Ohm
B.
Ohm-meter
C.
Siemens
D.
Coulomb
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Solution
The unit of resistivity is Ohm-meter (Ω·m).
Correct Answer: B — Ohm-meter
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Q. What is the unit of sound intensity?
A.
Decibel
B.
Watt
C.
Pascal
D.
Joule
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Solution
Sound intensity is measured in decibels (dB).
Correct Answer: A — Decibel
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Q. What is the unit of surface tension in the SI system?
A.
N/m
B.
J/m²
C.
Pa
D.
kg/m³
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Solution
The unit of surface tension is Newton per meter (N/m).
Correct Answer: A — N/m
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Q. What is the unit of surface tension?
A.
N/m
B.
J/m²
C.
Pa
D.
N
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Solution
Surface tension is defined as force per unit length, hence its unit is Newton per meter (N/m).
Correct Answer: A — N/m
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Q. What is the unit of the magnetic field as defined by the Biot-Savart Law?
A.
Tesla
B.
Newton
C.
Coulomb
D.
Volt
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Solution
The unit of the magnetic field as defined by the Biot-Savart Law is Tesla.
Correct Answer: A — Tesla
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Q. What is the unit of the magnetic field as per the Biot-Savart Law?
A.
Tesla
B.
Newton
C.
Coulomb
D.
Ampere
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Solution
The unit of the magnetic field is Tesla (T), which is derived from the Biot-Savart Law.
Correct Answer: A — Tesla
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Q. What is the unit of thermal conductivity?
A.
W/m·K
B.
J/kg·K
C.
K/W
D.
J/m·s
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Solution
The unit of thermal conductivity is Watts per meter per Kelvin (W/m·K).
Correct Answer: A — W/m·K
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Q. What is the unit of torque in the SI system?
A.
Newton
B.
Joule
C.
Newton-meter
D.
Pascal
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Solution
The unit of torque in the SI system is Newton-meter (Nm).
Correct Answer: C — Newton-meter
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Q. What is the unit of Young's modulus?
A.
N/m²
B.
Pa
C.
J/m³
D.
N/m
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Solution
Young's modulus is defined as stress divided by strain and is measured in Pascals (Pa).
Correct Answer: B — Pa
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Q. What is the value of (2^3) * (2^2)?
A.
2^5
B.
2^6
C.
2^7
D.
2^8
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Solution
Using the property of exponents, (2^3) * (2^2) = 2^(3+2) = 2^5.
Correct Answer: A — 2^5
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Q. What is the value of (4^2) * (4^3)?
A.
64
B.
128
C.
256
D.
1024
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Solution
4^2 * 4^3 = 4^(2+3) = 4^5 = 1024
Correct Answer: C — 256
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Q. What is the value of (x^2)^3?
A.
x^5
B.
x^6
C.
x^7
D.
x^8
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Solution
Using the power of a power property, (x^2)^3 = x^(2*3) = x^6.
Correct Answer: B — x^6
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Q. What is the value of 1 astronomical unit (AU) in meters?
A.
1.496 × 10^11 m
B.
1.496 × 10^9 m
C.
1.496 × 10^12 m
D.
1.496 × 10^10 m
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Solution
1 astronomical unit (AU) is approximately equal to 1.496 × 10^11 meters, which is the average distance from the Earth to the Sun.
Correct Answer: A — 1.496 × 10^11 m
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Q. What is the value of 1 Joule in terms of base SI units?
A.
1 kg·m²/s²
B.
1 kg·m/s²
C.
1 m²/s²
D.
1 kg·s²/m
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Solution
1 Joule is defined as 1 kg·m²/s², which is the product of mass, distance squared, and time squared.
Correct Answer: A — 1 kg·m²/s²
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Q. What is the value of 1 light year in meters?
A.
9.46 × 10^15 m
B.
3.00 × 10^8 m
C.
1.08 × 10^11 m
D.
6.37 × 10^6 m
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Solution
1 light year is the distance light travels in one year, which is approximately 9.46 × 10^15 meters.
Correct Answer: A — 9.46 × 10^15 m
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Q. What is the value of 2^(3x) * 2^(2x)?
A.
2^(5x)
B.
2^(6x)
C.
2^(x)
D.
2^(x+5)
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Solution
Using the property of exponents, 2^(3x) * 2^(2x) = 2^(3x + 2x) = 2^(5x).
Correct Answer: A — 2^(5x)
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Q. What is the value of 2^5 × 2^3?
A.
2^8
B.
2^15
C.
2^2
D.
2^5
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Solution
Using the property of exponents, a^m × a^n = a^(m+n), we get 2^(5+3) = 2^8.
Correct Answer: A — 2^8
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Q. What is the value of 2^5?
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Q. What is the value of 3^(2x) if x = 1?
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Solution
3^(2*1) = 3^2 = 9.
Correct Answer: C — 9
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Q. What is the value of 3^0?
A.
0
B.
1
C.
3
D.
undefined
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Solution
Any non-zero number raised to the power of 0 is 1.
Correct Answer: B — 1
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Q. What is the value of 4^(x) if x = 3?
A.
16
B.
64
C.
256
D.
1024
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Solution
4^3 = (2^2)^3 = 2^6 = 64.
Correct Answer: C — 256
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