Q. What is the work done when a force of 10 N moves an object 5 m in the direction of the force? (2016)
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A.
50 J
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B.
25 J
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C.
10 J
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D.
5 J
Solution
Work done (W) = Force × Distance = 10 N × 5 m = 50 J.
Correct Answer: A — 50 J
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Q. What is the work done when a force of 15 N moves an object 3 m at an angle of 0 degrees to the direction of motion?
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A.
45 J
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B.
30 J
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C.
60 J
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D.
75 J
Solution
Work = Force * Distance * cos(θ) = 15 N * 3 m * cos(0°) = 45 J.
Correct Answer: A — 45 J
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Q. What is the work done when a force of 15 N moves an object 3 m at an angle of 60° to the direction of the force?
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A.
22.5 J
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B.
30 J
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C.
36.5 J
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D.
45 J
Solution
W = F × d × cos(θ) = 15 N × 3 m × cos(60°) = 15 × 3 × 0.5 = 22.5 J.
Correct Answer: A — 22.5 J
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Q. What is the work done when a force of 15 N moves an object 3 m in the direction of the force? (2021)
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A.
45 J
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B.
30 J
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C.
15 J
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D.
60 J
Solution
Work Done (W) = Force * Distance = 15 N * 3 m = 45 J.
Correct Answer: A — 45 J
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Q. What is the work done when a force of 15 N moves an object 4 m in the direction of the force?
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A.
60 J
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B.
30 J
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C.
45 J
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D.
75 J
Solution
Work done = Force × Distance = 15 N × 4 m = 60 J
Correct Answer: A — 60 J
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Q. What is the work function of a metal if the threshold frequency is 5 x 10^14 Hz?
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A.
3.1 eV
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B.
2.5 eV
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C.
4.1 eV
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D.
1.6 eV
Solution
The work function φ can be calculated using φ = hf, where h = 6.63 x 10^-34 J.s and f = 5 x 10^14 Hz, giving φ ≈ 3.1 eV.
Correct Answer: A — 3.1 eV
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Q. What is the work function of a metal?
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A.
The energy required to ionize an atom
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B.
The energy required to remove an electron from the surface of a metal
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C.
The energy of the emitted electrons
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D.
The energy of the incident photons
Solution
The work function is the minimum energy required to remove an electron from the surface of a metal.
Correct Answer: B — The energy required to remove an electron from the surface of a metal
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Q. What is the work-energy theorem?
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A.
Work done is equal to change in momentum
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B.
Work done is equal to change in kinetic energy
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C.
Work done is equal to change in potential energy
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D.
Work done is equal to change in total energy
Solution
The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.
Correct Answer: B — Work done is equal to change in kinetic energy
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Q. What is the x-intercept of the line 3x + 4y - 12 = 0?
Solution
To find the x-intercept, set y = 0. Thus, 3x - 12 = 0 gives x = 4.
Correct Answer: B — 3
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Q. What is the x-intercept of the line 5x + 2y = 10?
Solution
Setting y = 0 in the equation gives 5x = 10, thus x = 2. The x-intercept is 2.
Correct Answer: B — 5
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Q. What is the x-intercept of the line 5x - 2y + 10 = 0?
Solution
Setting y = 0 in the equation gives 5x + 10 = 0, thus x = -2.
Correct Answer: B — 2
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Q. What is the x-intercept of the line 6x - 2y = 12?
Solution
Setting y = 0 in the equation gives 6x = 12, thus x = 2. The x-intercept is 2.
Correct Answer: B — 3
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Q. What is the y-intercept of the line 2x - 3y + 6 = 0? (2023)
Solution
Rearranging gives y = (2/3)x + 2; y-intercept = 2
Correct Answer: A — 2
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Q. What is the y-intercept of the line 2x - 3y = 6? (2022)
Solution
To find y-intercept, set x = 0: 2(0) - 3y = 6 => -3y = 6 => y = -2
Correct Answer: B — 3
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Q. What is the y-intercept of the line 3x - 2y = 6? (2020) 2020
Solution
Setting x = 0, we get -2y = 6, so y = -3.
Correct Answer: A — 3
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Q. What is the y-intercept of the line 3x - 2y = 6? (2022)
Solution
Set x = 0: -2y = 6 => y = -3, y-intercept is 3.
Correct Answer: B — 2
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Q. What is the y-intercept of the line 3x - 4y = 12? (2023)
Solution
Setting x = 0, we get -4y = 12, so y = -3.
Correct Answer: A — 3
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Q. What is the y-intercept of the line 4x + 5y - 20 = 0?
Solution
Setting x = 0 in the equation gives 5y = 20, thus y = 4. The y-intercept is 4.
Correct Answer: B — 5
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Q. What is the y-intercept of the line 5x + 2y - 10 = 0?
Solution
Setting x = 0 in the equation gives 2y - 10 = 0, thus y = 5.
Correct Answer: C — 2
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Q. What is the y-intercept of the line given by the equation 5x - 2y = 10? (2023)
Solution
Rearranging to slope-intercept form: -2y = -5x + 10, thus y = (5/2)x - 5. The y-intercept is -5.
Correct Answer: D — -2
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Q. What is the y-intercept of the line represented by the equation 5x + 2y = 10?
Solution
Set x = 0: 2y = 10 => y = 5. The y-intercept is (0, 5).
Correct Answer: B — 2
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Q. What is the Young's modulus of a material if a stress of 200 MPa produces a strain of 0.01? (2021)
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A.
2000 MPa
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B.
20 MPa
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C.
200 MPa
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D.
2 MPa
Solution
Young's modulus (E) = Stress / Strain = 200 MPa / 0.01 = 20000 MPa = 2000 MPa.
Correct Answer: A — 2000 MPa
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Q. What logical conclusion can be drawn if the mixed graph shows a consistent upward trend in one variable while the other variable fluctuates?
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A.
The fluctuating variable is negatively impacting the upward trend.
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B.
The upward trend is independent of the fluctuations.
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C.
Both variables are positively correlated.
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D.
The upward trend is likely to reverse soon.
Solution
The consistent upward trend suggests independence from the fluctuations of the other variable.
Correct Answer: B — The upward trend is independent of the fluctuations.
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Q. What logical connection can be inferred from the passage regarding climate change and technological innovation? (2023)
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A.
Technological innovation has no impact on climate change.
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B.
Climate change is solely caused by technological advancements.
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C.
Technological innovation can help mitigate climate change effects.
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D.
Climate change and technological innovation are unrelated.
Solution
The passage indicates that technological innovation can play a crucial role in addressing climate change.
Correct Answer: C — Technological innovation can help mitigate climate change effects.
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Q. What part of speech can function as a subject or object in a sentence? (2022)
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A.
Noun
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B.
Adverb
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C.
Conjunction
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D.
Interjection
Solution
A noun can function as a subject or object in a sentence, representing a person, place, thing, or idea.
Correct Answer: A — Noun
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Q. What part of speech expresses an action or state of being?
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A.
Noun
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B.
Adjective
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C.
Verb
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D.
Adverb
Solution
A verb expresses an action or a state of being.
Correct Answer: C — Verb
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Q. What part of speech is 'and' in the sentence: 'I like apples and oranges.'? (2023)
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A.
Conjunction
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B.
Noun
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C.
Verb
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D.
Adjective
Solution
'And' is a conjunction that connects two nouns.
Correct Answer: A — Conjunction
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Q. What part of speech is 'quickly' in the sentence: 'He runs quickly.'? (2022)
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A.
Noun
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B.
Adverb
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C.
Adjective
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D.
Pronoun
Solution
Quickly describes how he runs, making it an adverb.
Correct Answer: B — Adverb
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Q. What part of speech is used to describe a quality or characteristic of a noun? (2022)
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A.
Adverb
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B.
Noun
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C.
Adjective
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D.
Pronoun
Solution
An adjective describes a quality or characteristic of a noun.
Correct Answer: C — Adjective
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Q. What part of speech is used to describe the quality of a noun? (2022)
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A.
Adverb
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B.
Adjective
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C.
Noun
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D.
Pronoun
Solution
An adjective is used to describe the quality of a noun.
Correct Answer: B — Adjective
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