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RRB ALP Physics Questions
Practise physics (science) for the RRB Assistant Loco Pilot Examination: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Physics practice
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Q1.An object at rest stays at rest unless acted on by a net force. This is:
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Answer: A — Newton’s first law (inertia)
Newton’s first law, the law of inertia.
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Q2.What force is needed to accelerate a 2 kg mass at 2 m/s²?
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Answer: C — 4 N
F = ma = 2 × 2 = 4 N.
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Q3.Which colour of visible light has the longest wavelength?
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Answer: B — Red
Red light has the longest wavelength (~700 nm).
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Q4.Find the power dissipated when 2.5 A flows through a 2 Ω resistor.
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Answer: A — 12.5 W
P = I²R = 2.5² × 2 = 12.5 W.
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Q5.The upthrust on a body immersed in a fluid equals the weight of fluid displaced. This is:
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Answer: B — Archimedes’ principle
Archimedes’ principle.
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Q6.Find the kinetic energy of a 36 kg body moving at 13 m/s.
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Answer: C — 3,042 J
KE = ½mv² = ½ × 36 × 13² = 3,042 J.
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Q7.Acceleration due to gravity on Earth’s surface is about:
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Answer: A — 9.8 m/s²
g ≈ 9.8 m/s².
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Q8.A body starts at 14 m/s and accelerates uniformly at 3 m/s² for 7 s. Find its final velocity.
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Answer: C — 35 m/s
v = u + at = 14 + 3×7 = 35 m/s.
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Q9.Work done is zero when the force is:
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Answer: A — Perpendicular to displacement
W = Fd cos θ; at 90° cos θ = 0.
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Q10.Find the kinetic energy of a 46 kg body moving at 16 m/s.
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Answer: C — 5,888 J
KE = ½mv² = ½ × 46 × 16² = 5,888 J.
How to approach physics questions
Write the formula before substituting and keep SI units throughout. Most numerical questions use one of: v = u + at, s = ut + ½at², F = ma, KE = ½mv², V = IR, P = I²R.
About RRB ALP
RRB Assistant Loco Pilot Examination — conducted by Railway Recruitment Boards (RRB). Recruits Assistant Loco Pilots and technicians for Indian Railways.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
RRB ALP practice topics
| Topic | Section | Question source |
|---|---|---|
| Number System & Simplification | Quantitative aptitude | Calculated (new numbers every set) |
| Logical Reasoning | Reasoning | Calculated (new numbers every set) |
| Physics | Science | Calculated + question bank |
| Chemistry | Science | Calculated + question bank |
| Indian Polity, History & Geography | General awareness | Question bank |