Q. If a force of 50 N is applied to a 25 kg object, what is the resulting acceleration? (2022)
-
A.
1 m/s²
-
B.
2 m/s²
-
C.
3 m/s²
-
D.
4 m/s²
Solution
Acceleration = Force / Mass = 50 N / 25 kg = 2 m/s².
Correct Answer:
B
— 2 m/s²
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Q. If a force of 50 N is applied to a 25 kg object, what will be its acceleration? (2022)
-
A.
1 m/s²
-
B.
2 m/s²
-
C.
3 m/s²
-
D.
4 m/s²
Solution
Acceleration = Force / Mass = 50 N / 25 kg = 2 m/s².
Correct Answer:
B
— 2 m/s²
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Q. If a line has the equation 7x - 3y + 21 = 0, what is its slope?
-
A.
7/3
-
B.
-7/3
-
C.
3/7
-
D.
-3/7
Solution
Rearranging gives y = (7/3)x + 7. The slope is -7/3.
Correct Answer:
B
— -7/3
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Q. If a line has the equation 7x - 3y = 21, what is its slope?
-
A.
7/3
-
B.
-7/3
-
C.
3/7
-
D.
-3/7
Solution
Rearranging to slope-intercept form gives y = (7/3)x - 7. The slope is -7/3.
Correct Answer:
B
— -7/3
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Q. If a line has the equation y - 3 = 4(x - 1), what is its slope?
-
A.
4
-
B.
1/4
-
C.
-4
-
D.
-1/4
Solution
The equation is in point-slope form, where the slope m = 4.
Correct Answer:
A
— 4
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Q. If a line has the equation y = -3x + 7, what is the y-coordinate when x = 2?
Solution
Substituting x = 2 into the equation gives y = -3(2) + 7 = 1.
Correct Answer:
B
— 4
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Q. If a machine does 200 J of work in 10 seconds, what is its power? (2022)
-
A.
20 W
-
B.
10 W
-
C.
30 W
-
D.
40 W
Solution
Power (P) = Work / Time = 200 J / 10 s = 20 W
Correct Answer:
A
— 20 W
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Q. If a machine does 200 J of work in 5 seconds, what is its power? (2022)
-
A.
40 W
-
B.
50 W
-
C.
20 W
-
D.
30 W
Solution
Power (P) = Work Done (W) / Time (t) = 200 J / 5 s = 40 W
Correct Answer:
B
— 50 W
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Q. If a machine does 2000 J of work in 5 seconds, what is its power? (2022)
-
A.
400 W
-
B.
200 W
-
C.
100 W
-
D.
500 W
Solution
Power (P) = Work Done / Time = 2000 J / 5 s = 400 W
Correct Answer:
A
— 400 W
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Q. If a machine does 3000 J of work in 10 seconds, what is its power output?
-
A.
300 W
-
B.
150 W
-
C.
600 W
-
D.
1000 W
Solution
Power (P) = Work (W) / Time (t) = 3000 J / 10 s = 300 W.
Correct Answer:
A
— 300 W
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Q. If a machine has a power output of 200 W, how much work can it do in 5 seconds? (2000)
-
A.
500 J
-
B.
1000 J
-
C.
1500 J
-
D.
2000 J
Solution
Work done (W) = Power (P) × Time (t) = 200 W × 5 s = 1000 J.
Correct Answer:
B
— 1000 J
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Q. If a magnetic field is increasing at a rate of 0.1 T/s, what is the induced EMF in a coil of 50 turns and area 0.2 m²? (2021)
-
A.
1 V
-
B.
0.5 V
-
C.
0.2 V
-
D.
0.1 V
Solution
Induced EMF (ε) = -N * (dB/dt) * A = -50 * 0.1 T/s * 0.2 m² = -1 V.
Correct Answer:
A
— 1 V
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Q. If a material has a high shear modulus, what does it indicate about the material? (2023)
-
A.
It is very elastic
-
B.
It is very ductile
-
C.
It resists shear deformation
-
D.
It is very brittle
Solution
A high shear modulus indicates that the material resists shear deformation.
Correct Answer:
C
— It resists shear deformation
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Q. If a material has a shear modulus of 80 GPa and a shear stress of 40 MPa is applied, what is the shear strain? (2023)
-
A.
0.0005
-
B.
0.005
-
C.
0.5
-
D.
0.05
Solution
Shear strain (γ) = Shear stress (τ) / Shear modulus (G) = 40 MPa / 80 GPa = 0.0005.
Correct Answer:
A
— 0.0005
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Q. If a measurement has a relative error of 5%, what does this indicate? (2022)
-
A.
The measurement is very accurate
-
B.
The measurement is very precise
-
C.
The measurement is off by 5% of the true value
-
D.
The measurement is exact
Solution
A relative error of 5% indicates that the measurement is off by 5% of the true value.
Correct Answer:
C
— The measurement is off by 5% of the true value
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Q. If a measurement is accurate but not precise, what does it imply? (2019)
-
A.
All measurements are close to each other
-
B.
Measurements are close to the true value
-
C.
Measurements vary widely
-
D.
None of the above
Solution
Accuracy refers to how close a measurement is to the true value.
Correct Answer:
B
— Measurements are close to the true value
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Q. If a measurement is accurate, it means: (2019)
-
A.
It is close to the true value
-
B.
It is consistent
-
C.
It has a small error
-
D.
It is precise
Solution
Accuracy refers to how close a measured value is to the true value.
Correct Answer:
A
— It is close to the true value
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Q. If a measurement is said to have a precision of 0.01 cm, what does this imply? (2019)
-
A.
The measurement is accurate to 0.01 cm
-
B.
The measurement can vary by 0.01 cm
-
C.
The measurement is exact
-
D.
The measurement is rounded to 0.01 cm
Solution
A precision of 0.01 cm implies that the measurement can vary by this amount, indicating the level of uncertainty.
Correct Answer:
B
— The measurement can vary by 0.01 cm
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Q. If a person does 200 J of work in 5 seconds, what is their power output?
-
A.
40 W
-
B.
50 W
-
C.
60 W
-
D.
30 W
Solution
Power (P) = Work (W) / Time (t) = 200 J / 5 s = 40 W.
Correct Answer:
B
— 50 W
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Q. If a person does 300 J of work in 15 seconds, what is their average power output?
-
A.
20 W
-
B.
15 W
-
C.
25 W
-
D.
30 W
Solution
Power = Work / Time = 300 J / 15 s = 20 W
Correct Answer:
A
— 20 W
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Q. If a person does 300 J of work in 15 seconds, what is their power output?
-
A.
20 W
-
B.
15 W
-
C.
25 W
-
D.
30 W
Solution
Power = Work / Time = 300 J / 15 s = 20 W
Correct Answer:
A
— 20 W
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Q. If a person does 500 J of work in 5 seconds, what is their power output?
-
A.
100 W
-
B.
50 W
-
C.
200 W
-
D.
150 W
Solution
Power (P) = Work (W) / Time (t) = 500 J / 5 s = 100 W.
Correct Answer:
A
— 100 W
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Q. If a person lifts a 20 kg box to a height of 2 m, what is the work done against gravity? (g = 9.8 m/s²)
-
A.
392 J
-
B.
196 J
-
C.
588 J
-
D.
784 J
Solution
Work = m * g * h = 20 kg * 9.8 m/s² * 2 m = 392 J.
Correct Answer:
B
— 196 J
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Q. If a physical quantity has dimensions [M^0 L^1 T^-1], what is it? (2020)
-
A.
Velocity
-
B.
Acceleration
-
C.
Force
-
D.
Energy
Solution
The dimensions [M^0 L^1 T^-1] correspond to velocity, which is defined as distance traveled per unit time.
Correct Answer:
A
— Velocity
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Q. If a physical quantity has dimensions [M^2 L^3 T^-1], what could it represent? (2020)
-
A.
Force
-
B.
Pressure
-
C.
Volume flow rate
-
D.
Energy
Solution
The dimensions [M^2 L^3 T^-1] correspond to volume flow rate, which is volume per unit time.
Correct Answer:
C
— Volume flow rate
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Q. If a rectangle has a length of 10 and a width of 5, what is its area? (2017)
Solution
Area = length × width = 10 × 5 = 50.
Correct Answer:
A
— 50
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Q. If a rectangle has a length of 10 cm and a width of 5 cm, what is its area? (2017)
-
A.
50 cm²
-
B.
60 cm²
-
C.
40 cm²
-
D.
30 cm²
Solution
Area = length × width = 10 cm × 5 cm = 50 cm².
Correct Answer:
A
— 50 cm²
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Q. If a rectangle has a length of 12 cm and a width of 4 cm, what is its perimeter? (2019)
-
A.
32 cm
-
B.
28 cm
-
C.
24 cm
-
D.
30 cm
Solution
Perimeter = 2(length + width) = 2(12 + 4) = 32 cm.
Correct Answer:
A
— 32 cm
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Q. If a rectangle has a length of 8 cm and a width of 3 cm, what is its area? (2015)
-
A.
24 cm²
-
B.
30 cm²
-
C.
20 cm²
-
D.
18 cm²
Solution
Area = length × width = 8 × 3 = 24 cm².
Correct Answer:
A
— 24 cm²
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Q. If a rectangle has a length of 8 cm and a width of 3 cm, what is its perimeter? (2019)
-
A.
22 cm
-
B.
24 cm
-
C.
20 cm
-
D.
26 cm
Solution
Perimeter = 2(length + width) = 2(8 + 3) = 22 cm.
Correct Answer:
A
— 22 cm
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