Prepare for Army AFNS and civilian nursing admissions in one place. Choose a pathway or browse all questions. Each pathway includes common preparation. These are original practice questions, not verified official past papers.
Biology · Question 341
Finger-like villi that increase the absorptive surface are especially abundant in the:
Stomach
Esophagus
Ileum
Rectum
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Correct answer: C
Ileum
The small intestine, including the ileum, has numerous villi that increase its surface area for absorption.
Biology · Question 342
The heart is enclosed by which protective double-walled sac?
Pleura
Pericardium
Peritoneum
Meninges
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Correct answer: B
Pericardium
The pericardium is the membranous sac surrounding the heart.
Biology · Question 343
A two-chambered heart is characteristic of most:
Birds
Mammals
Fish
Reptiles
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Correct answer: C
Fish
Most fish have one atrium and one ventricle, forming a two-chambered heart.
Biology · Question 344
Which male reproductive structure produces sperm in bryophytes?
Archegonium
Antheridium
Sporangium
Protonema
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Correct answer: B
Antheridium
The antheridium is the male gametangium of bryophytes and produces sperm cells.
Physics · Question 345
Which electromagnetic radiation has the longest wavelength?
Gamma rays
X-rays
Visible light
Radio waves
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Correct answer: D
Radio waves
Radio waves occupy the longest-wavelength region of the electromagnetic spectrum.
Physics · Question 346
According to Stokes' law, the magnitude of the viscous drag force on a small sphere moving slowly through a fluid is:
2πηrv
6πηrv
ηrv/6
6πr/ηv
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Correct answer: B
6πηrv
Stokes' law gives F = 6πηrv for laminar flow around a small sphere.
Physics · Question 347
Young's double-slit experiment provides direct evidence of:
Nuclear fission
Photoelectric emission
Wave interference
Radioactive decay
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Correct answer: C
Wave interference
The alternating bright and dark fringes arise from constructive and destructive interference.
Physics · Question 348
For fixed nonzero values of charge, speed, and magnetic field, the magnetic force qvB sin θ is greatest when θ is:
0 degrees
45 degrees
90 degrees
180 degrees
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Correct answer: C
90 degrees
The sine factor reaches its maximum value of one at 90 degrees.
Physics · Question 349
A uniform magnetic field of 0.2 T is perpendicular to a flat surface of area 20 m². What is the magnetic flux through the surface?
0 Wb
0.4 Wb
2 Wb
4 Wb
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Correct answer: D
4 Wb
The field is parallel to the area vector, so flux BA = 0.2 × 20 = 4 Wb.
Physics · Question 350
A spring extends 4 cm when a force of 0.04 N is applied. What is its spring constant?
0.1 N/m
1 N/m
10 N/m
100 N/m
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Correct answer: B
1 N/m
Using F = kx with x = 0.04 m gives k = 0.04/0.04 = 1 N/m.