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Physics QUESTION #399

Question 1521

In gases

the speed of sound is inversely proportional to __________ of the density when other factors are same.✔️
Square root
Square
Third power

Correct Answer Logic:

No explanation provided for this question.

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Physics QUESTION #4395

Question 1522

If the horizontal range of a projectile becomes half of its maximum possible horizontal range, the probable angle of projection is:

$15°$✔️
$30°$
$45°$
$60°$

Correct Answer Logic:

Maximum range occurs at $45°$: $R_{max} = \dfrac{v^2}{g}$. Range at angle $\theta$: $R = \dfrac{v^2\sin2\theta}{g}$. For $R = \dfrac{R_{max}}{2}$: $\sin2\theta = \dfrac{1}{2}$, so $2\theta = 30°$ or $150°$, giving $\theta = 15°$ or $75°$. The smallest angle is $15°$.

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General Knowledge QUESTION #270

Question 1523

The Headquarters of African Union is situated in:

Ethiopia✔️
Niger
Nigeria
None of these

Correct Answer Logic:

The AU is headquartered in Addis Ababa, Ethiopia.

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Physics QUESTION #7835

Question 1524

Maximum power transfer theorem: load resistance should equal:

Half of source resistance
Zero
Double source resistance
Source resistance✔️

Correct Answer Logic:

For maximum power, R_L = R_source (Thévenin resistance).

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Physics QUESTION #7018

Question 1525

Two forces $P$ and $Q$ have magnitudes $2F$ and $3F$ respectively, acting at an angle $\theta$ to each other. If the magnitude of force $Q$ is doubled, the resulting force also doubles. What is the value of the angle $\theta$?

$120^\circ$✔️
$60^\circ$
$90^\circ$
$30^\circ$

Correct Answer Logic:

Using the resultant formula $R^2 = A^2 + B^2 + 2AB \cos \theta$. Initially, $R^2 = (2F)^2 + (3F)^2 + 2(2F)(3F)\cos \theta = 13F^2 + 12F^2 \cos \theta$. When $Q$ is doubled ($6F$), the new resultant is $2R$, so $(2R)^2 = (2F)^2 + (6F)^2 + 2(2F)(6F)\cos \theta = 40F^2 + 24F^2 \cos \theta$. Substituting $4R^2$ and solving the equations yields $\cos \theta = -0.5$, which corresponds to $120^\circ$.

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Security Measures to Maintain Law and Order QUESTION #7680

Question 1526

In which year was the Airport Security Force (ASF) of Pakistan established?

1965
1976✔️
1983
None of these

Correct Answer Logic:

The Airport Security Force (ASF) of Pakistan was established in 1976 through an Act of Parliament. It is a federal law enforcement agency responsible for securing airports, civil aviation facilities, and ensuring aviation security in Pakistan.

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Political Science QUESTION #6669

Question 1527

The 'Separation of Powers' doctrine was most famously elaborated by:

Locke
Voltaire
Montesquieu✔️
None of these

Correct Answer Logic:

Montesquieu's 'The Spirit of the Laws' advocated for dividing government into three branches.

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Verbal Reasoning QUESTION #8072

Question 1528

Given that $p$ and $q$ are different prime numbers, $r$ is the least prime number greater than $p$, and $s$ is the least prime number greater than $q$.

Compare:

Column A: $r - p$

Column B: $s - q$

Column A is greater
Column B is greater
The two quantities are equal
The relationship cannot be determined✔️

Correct Answer Logic:

The difference between a prime and the next prime varies. For example:

$3 - 2 = 1$ (gap of 1)
$5 - 3 = 2$ (gap of 2)
$7 - 5 = 2$ (gap of 2)
$11 - 7 = 4$ (gap of 4)
$23 - 19 = 4$ (gap of 4)

Since $p$ and $q$ are different primes and we don't know which specific primes they are, the gaps $r - p$ and $s - q$ could be equal or different.

For instance:

If $p = 2$ and $q = 3$: then $r = 3, s = 5$, so $r - p = 1$ and $s - q = 2$, making Column B greater
If $p = 3$ and $q = 2$: then $r = 5, s = 3$, so $r - p = 2$ and $s - q = 1$, making Column A greater

Since the relationship depends on which primes are chosen, it cannot be determined from the given information.

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Accounting Finance and Punjab Sales Tax on Services QUESTION #2567

Question 1529

According to section 4(5) of the Act, where a taxable service originates from outside Pakistan but is received or terminates in the Punjab, the liability to pay tax to the Government falls upon:

The foreign service provider
The Federal Board of Revenue
The recipient of such service in Punjab✔️
The Punjab Revenue Authority itself

Correct Answer Logic:

Section 4(5) explicitly states that where a taxable service originates from outside Pakistan but is received or terminates in the Punjab, the RECIPIENT of such service shall be liable to pay the tax to the Government — establishing the reverse charge mechanism for imported services.

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Pakistan Affairs QUESTION #4666

Question 1530

Which Pakistani scientist was the sole Nobel Prize winner from Pakistan?

Dr. Ashfaq Ahmed
Dr. Abdus Salam✔️
Dr. Abdul Qadeer Khan
Dr. Salimuzzaman Siddiqui

Correct Answer Logic:

Dr. Abdus Salam was the first Pakistani Nobel Laureate, receiving the 1979 Nobel Prize in Physics for his work on the electroweak unification theory.

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CISA QUESTION #1762

Question 1531

What is the primary benefit of applying precedence diagram analysis to BPR projects?

It sequences individual activities in detail
It reveals the cascading impact of changes✔️
It supports root cause analysis
It enables the use of decision tree reporting

Correct Answer Logic:

Precedence diagram analysis shows the ripple effect of changes and identifies the critical path — the minimum set of tasks required to meet the project objective. It helps distinguish high-dependency tasks that must be completed from low-priority tasks that may be dropped.

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Physical Education QUESTION #6799

Question 1532

How did the Enlightenment period fundamentally change the justification for Physical Education compared to the Middle Ages?

It focused on preparation for feudal warfare
It emphasized naturalism and the physiological necessity of movement for health and reason✔️
It viewed physical activity as a distraction from spiritual salvation
It prioritized aesthetic beauty over functional health

Correct Answer Logic:

Enlightenment thinkers like Rousseau argued that physical activity was a natural necessity for developing a child's reasoning and overall health.

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English QUESTION #2760

Question 1533

Which sentence uses QUOTATION MARKS correctly?

'She said✔️
I am tired'.
She said
'I am tired'.

Correct Answer Logic:

'I am tired.

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Geography QUESTION #6307

Question 1534

Which environmental transformation represents the most significant anthropogenic modification of the nitrogen cycle?

Deforestation reducing nitrogen fixation by legumes
Haber-Bosch process creating reactive nitrogen for fertilizers✔️
Burning fossil fuels releasing NOx compounds
Wetland drainage reducing denitrification

Correct Answer Logic:

The Haber-Bosch process (converting N2 to NH3 for fertilizers) has doubled the amount of reactive nitrogen entering the biosphere annually - the single largest human modification of the nitrogen cycle, exceeding all natural terrestrial nitrogen fixation combined.

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HR and Management QUESTION #6457

Question 1535

The four areas most influenced by legislation in HRM include:

Recruitment, training, benefits, and technology
Equal employment, compensation, safety, and labor relations✔️
Performance appraisal, succession planning, diversity, and ethics
Job analysis, selection, orientation, and termination

Correct Answer Logic:

The text explicitly identifies four areas most influenced by legislation: equal employment, compensation, safety, and labor relations. Failure to comply can result in costly back-pay awards, class action suits, and penalties.

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Accounting & Finance QUESTION #6105

Question 1536

Vehicle X cost $80,000, useful life 5 years, residual value $5,000, depreciated straight-line. After 3 years, part-exchange value was $20,000. What was the loss on disposal?

$12,000
$15,000✔️
$24,000
$30,000

Correct Answer Logic:

Option B ($15,000) is correct.

Annual depreciation = ($80,000 − $5,000) ÷ 5 = $15,000

Accumulated depreciation after 3 years = $45,000

Carrying value = $80,000 − $45,000 = $35,000

Loss on disposal = $35,000 − $20,000 = $15,000

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Reading and Writing (Module-1) QUESTION #5406

Question 1537

Art collectives, like the United States- and Vietnam-based collective The Propeller Group or Cuba's Los Carpinteros, are groups of artists who agree to work together: perhaps for stylistic reasons, or to advance certain shared political ideals, or to help mitigate the costs of supplies and studio space. Regardless of the reasons, art collectives usually involve some collaboration among the artists. Based on a recent series of interviews with various art collectives, an arts journalist claims that this can be difficult for artists who are often used to having sole control over their work. Which quotation from the interviews best illustrates the journalist's claim?

The first collective I joined included many amazingly talented artists, and we enjoyed each other's company, but because we had a hard time sharing credit and responsibility for our work, the collective didn't last.✔️
We work together, but that doesn't mean that individual projects are equally the work of all of us. Many of our projects are primarily the responsibility of whoever originally proposed the work to the group.
Having worked as a member of a collective for several years, it's sometimes hard to recall what it was like to work alone without the collective's support. But that support encourages my individual expression rather than limits it.
Sometimes an artist from outside the collective will choose to collaborate with us on a project, but all of those projects fit within the larger themes of the work the collective does on its own.

Correct Answer Logic:

This quote directly illustrates the difficulty of sharing control by stating the collective didn't last because members had trouble sharing credit and responsibility.

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Agronomy QUESTION #2113

Question 1538

Phenomics in modern agronomy refers to:

The study of phenotypic plasticity in weed populations under herbicide selection pressure
The high-throughput measurement of plant traits (morphological, physiological, biochemical) using sensors, imaging (RGB, thermal, hyperspectral, LiDAR), and computational analysis — bridging the 'phenotyping bottleneck' between genomic information and field performance to accelerate crop improvement and precision agronomy✔️
The traditional method of visual scoring of crop traits by trained agronomists in field trials
The science of predicting phenological development stages using degree-day accumulation models

Correct Answer Logic:

Phenomics addresses the critical bottleneck: genomics generates vast data on genetic variation, but connecting genotype to field phenotype at scale and speed requires high-throughput phenotyping platforms — ground-based (LemnaTec, Scanalyzer) and aerial (UAV-mounted sensors). Traits measured: canopy temperature (thermal), chlorophyll content (NDVI, hyperspectral), architecture (LiDAR/3D), root systems (X-ray CT). This enables genomic selection, QTL mapping, and precision agronomy at previously impossible scales.

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Accounting & Finance QUESTION #6190

Question 1539

Financial managers prefer 'Market Value' over 'Book Value' because:

Book values are too difficult to calculate.
Market value reflects the actual cash value if an asset were sold today.✔️
Book values are always higher than market values.
Market values are mandated by historical cost accounting.

Correct Answer Logic:

Market value represents the true current worth, whereas book value is a historical cost [cite: 15].

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Accounting & Finance QUESTION #6134

Question 1540

Property purchased 1 January 2010 for $100,000, useful life 50 years. On 1 January 2024, revalued to $119,000. Total useful life remains 50 years from 2010. What is the depreciation charge for year ended 31 December 2024?

$2,000
$2,380
$2,778
$3,306✔️

Correct Answer Logic:

Option D ($3,306) is correct.

Years elapsed by 1 Jan 2024 = 14 years; Remaining life = 50 − 14 = 36 years

Annual depreciation = $119,000 ÷ 36 = $3,305.56 ≈ $3,306

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