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RRB Group D Physics Questions
Practise physics (science) for the RRB Level 1 (Group D) 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.The SI unit of power is the:
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Answer: D — Watt
1 watt = 1 joule per second.
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Q2.Find the power dissipated when 3 A flows through a 25 Ω resistor.
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Answer: B — 225 W
P = I²R = 3² × 25 = 225 W.
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Q3.Absolute zero is:
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Answer: D — −273.15 °C
0 K = −273.15 °C.
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Q4.Find the kinetic energy of a 8 kg body moving at 19 m/s.
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Answer: B — 1,444 J
KE = ½mv² = ½ × 8 × 19² = 1,444 J.
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Q5.The device that converts mechanical energy into electrical energy is a:
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Answer: C — Generator
A generator uses electromagnetic induction.
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Q6.A body with initial velocity 0 m/s accelerates at 6 m/s² for 5 s. Find the distance covered.
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Answer: D — 75 m
s = ut + ½at² = 0×5 + ½×6×5² = 75 m.
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Q7.The bending of light as it passes from one medium to another is:
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Answer: C — Refraction
Refraction is caused by a change in light’s speed.
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Q8.Find the power dissipated when 4 A flows through a 2 Ω resistor.
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Answer: A — 32 W
P = I²R = 4² × 2 = 32 W.
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Q9.The unit of electrical resistance is the:
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Answer: D — Ohm
Resistance is measured in ohms (Ω).
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Q10.What force is needed to accelerate a 27 kg mass at 7 m/s²?
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Answer: D — 189 N
F = ma = 27 × 7 = 189 N.
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 Group D
RRB Level 1 (Group D) Examination — conducted by Railway Recruitment Boards (RRB). Recruits track maintainers, helpers and assistants; general science carries significant weight.
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 Group D practice topics
| Topic | Section | Question source |
|---|---|---|
| Number System & Simplification | Quantitative aptitude | Calculated (new numbers every set) |
| Percentages | 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 |
| Biology | Science | Question bank |
| Indian Polity, History & Geography | General awareness | Question bank |