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Let the height of tower be $h$ and distances from tower base be $d_A, d_B, d_C$ for points A, B, C respectively. From angles: $\tan(30°) = \frac{h}{d_A}$ gives $d_A = h\sqrt{3}$; $\tan(45°) = \frac{h}{d_B}$ gives $d_B = h$; $\tan(60°) = \frac{h}{d_C}$ gives $d_C = \frac{h}{\sqrt{3}}$. Since points are collinear in order A, B, C from farthest to nearest: $AB = d_A - d_B = h\sqrt{3} - h = h(\sqrt{3}-1)$ and $BC = d_B - d_C = h - \frac{h}{\sqrt{3}} = h(1-\frac{1}{\sqrt{3}}) = h\frac{\sqrt{3}-1}{\sqrt{3}}$. Ratio: $\frac{AB}{BC} = \frac{h(\sqrt{3}-1)}{h\frac{\sqrt{3}-1}{\sqrt{3}}} = \sqrt{3}$. Therefore AB:BC = $\sqrt{3}:1$.

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Accounting & Finance QUESTION #6154

Question 2584

What is the correct definition of margin of safety (in dollars)?

The amount by which sales revenue exceeds total fixed and variable costs
The amount by which sales revenue exceeds total marginal costs
The amount by which sales revenue could fall before the break-even point is reached✔️
Total fixed costs divided by contribution per unit sold

Correct Answer Logic:

Option C is correct.

Margin of safety = Actual (or budgeted) sales revenue − Break-even sales revenue

It represents the buffer before the business starts making a loss.

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Administration QUESTION #9575

Question 2585

A government privatizes its national airline but retains a 'golden share' that gives it veto power over major strategic decisions. Which privatization theory most accurately describes this arrangement?

Full divestiture theory — the state has completely transferred ownership to private hands
Partial privatization theory — the state retains strategic control while transferring operational risk and efficiency incentives to private management✔️
Corporatization theory — the airline is restructured as a state-owned enterprise without private equity
Franchising theory — the state licenses private operators to run the airline under government-set conditions

Correct Answer Logic:

Partial privatization transfers equity to private investors while the state retains a strategic stake (golden share) to protect national interest. This is distinct from full divestiture (complete exit), corporatization (no private ownership) and franchising (no equity transfer). The golden share mechanism is the defining feature.

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Geography QUESTION #1240

Question 2586

The coarse particles or solidified lava ejected from a volcano are called volcanic:

Bombs✔️
Ash
Dust
None of these

Correct Answer Logic:

Volcanic bombs are large, coarse fragments of solidified or partially solidified lava ejected from a volcano during an eruption. They are typically larger than 64 mm in diameter and acquire a rounded or aerodynamic shape while in flight. Volcanic ash refers to tiny particles (less than 2 mm), and dust refers to the finest particles.

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Aptitude QUESTION #10958

Question 2587

The concept of 'Form follows Function' is attributed to which architect and represents which movement?

Walter Gropius; Bauhaus
Louis Sullivan; Chicago School / Modernism✔️
Mies van der Rohe; Minimalism
Frank Lloyd Wright; Prairie Style

Correct Answer Logic:

'Form Follows Function' — coined by Louis Sullivan (1896, in his essay 'The Tall Office Building Artistically Considered').

Sullivan was the 'father of modernism' and mentor to Frank Lloyd Wright.
The phrase means: the shape/appearance of a building should be primarily dictated by its intended function or purpose.
Associated with the Chicago School of architecture — early skyscraper design using steel frame construction.
Influenced later Modernism, Bauhaus, and the International Style.

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General Knowledge QUESTION #8918

Question 2588

Palembang is the capital city of which country/region?

Indonesia✔️
Malaysia
Thailand
Vietnam

Correct Answer Logic:

Palembang is a city in Indonesia, but capital? Actually Jakarta is capital. Key says A Indonesia.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3059

Question 2589

DRAP stands for:

Drug Regulatory Authority of Pakistan✔️
District Resource for All Pharmacies
Department of Research and Pharmacy
Daily Report on All Products

Correct Answer Logic:

DRAP is the central body regulating drugs in Pakistan.

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Math Physics Chemistry Biology QUESTION #11231

Question 2590

A eukaryotic cell has a diploid chromosome number of $2n = 46$. During metaphase of mitosis, how many chromatids are present in the cell?

46
92✔️
23
69

Correct Answer Logic:

During metaphase of mitosis, each of the $46$ chromosomes consists of $2$ sister chromatids. Thus total chromatids $= 46 \times 2 = 92$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3155

Question 2591

The 'Thoracic Duct' empties lymph into the:

Right atrium
Left Subclavian Vein✔️
Aorta
Inferior Vena Cava

Correct Answer Logic:

The thoracic duct is the largest lymphatic vessel in the body.

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Geography QUESTION #1251

Question 2592

'Spatial databases' are also known as:

Geodatabases✔️
Mono-databases
Concurrent databases
None of these

Correct Answer Logic:

Spatial databases (also called geodatabases) are databases optimized to store, query, and manipulate data that represents objects defined in geometric space — particularly geographic features. The term 'geodatabase' is widely used in GIS (especially in ESRI's ArcGIS platform) to describe a database of spatial/geographic data with both location and attribute information.

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Physics QUESTION #368

Question 2593

What is emitted by a hot metal filament in a cathode ray tube?

X-ray
Proton
Electron✔️
Photon

Correct Answer Logic:

Hot metal filaments emit electrons through thermionic emission

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General Knowledge QUESTION #8589

Question 2594

Which city is often referred to as the 'Newest Capital of the World'?

Islamabad✔️
Sydney
London
Paris

Correct Answer Logic:

Islamabad became the capital of Pakistan in the 1960s, making it one of the newest planned capitals.

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Accounting & Finance QUESTION #1228

Question 2595

The discount rate at which two projects have identical _________ is referred to as Fisher's rate of intersection.

Present values
Net present values✔️
IRRs
Profitability indexes

Correct Answer Logic:

Fisher's rate of intersection (or Fisher's rate) is the discount rate at which the NPVs of two mutually exclusive projects are equal — the crossover rate. At this rate, both projects have identical Net Present Values. Below this rate, one project is preferred; above it, the other is preferred. It is used to resolve conflicts between NPV and IRR rankings.

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Professional QUESTION #1821

Question 2596

According to Section 2(a), an 'ad hoc appointment' is defined as appointment of a duly qualified person made otherwise than in accordance with the prescribed method of recruitment, pending what?

Completion of probation period
Recruitment in accordance with such method✔️
Approval of the Federal Public Service Commission
Issuance of a formal notification by the President

Correct Answer Logic:

Section 2(a) defines an ad hoc appointment as the appointment of a duly qualified person made otherwise than in accordance with the prescribed method of recruitment, pending recruitment in accordance with such method. It is thus a temporary arrangement until regular recruitment is completed.

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Math Physics Chemistry Biology QUESTION #11376

Question 2597

A part of plasma membrane controls the fluidity of the membrane:

Glycoproteins
Carrier protein
Cholesterol✔️
Carbohydrates

Correct Answer Logic:

Cholesterol molecules are interspersed among the phospholipid bilayer and act as a fluidity buffer. At high temperatures, cholesterol restrains phospholipid movement (reducing fluidity); at low temperatures, it prevents tight packing (preventing solidification). This maintains optimal membrane fluidity across temperature changes.

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Geography QUESTION #6349

Question 2598

The 'demographic dividend' in development economics refers to:

Population growth accelerating economic expansion
Economic growth potential from declining dependency ratios when working-age population exceeds dependents✔️
Government payments to families with children
Youthful population ensuring future labor supply

Correct Answer Logic:

Demographic dividend occurs when fertility declines, creating a temporary period where working-age population (15-64) grows faster than dependents (children + elderly). This offers economic growth opportunity if the working-age population is productively employed, as seen in East Asian tiger economies.

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