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JEE Main Physics Questions
Practise physics (science) for the Joint Entrance Examination (Main): 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 bending of light as it passes from one medium to another is:
Show answer & explanation
Answer: B — Refraction
Refraction is caused by a change in light’s speed.
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Q2.Find the kinetic energy of a 48 kg body moving at 10 m/s.
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Answer: D — 2,400 J
KE = ½mv² = ½ × 48 × 10² = 2,400 J.
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Q3.Which law states that every action has an equal and opposite reaction?
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Answer: C — Newton’s third law
Newton’s third law.
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Q4.A body with initial velocity 17 m/s accelerates at 1 m/s² for 3 s. Find the distance covered.
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Answer: D — 55.5 m
s = ut + ½at² = 17×3 + ½×1×3² = 55.5 m.
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Q5.A transformer works on the principle of:
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Answer: B — Mutual induction
A changing current in one coil induces a voltage in the other.
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Q6.Find the power dissipated when 1 A flows through a 20 Ω resistor.
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Answer: A — 20 W
P = I²R = 1² × 20 = 20 W.
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Q7.Absolute zero is:
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Answer: D — −273.15 °C
0 K = −273.15 °C.
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Q8.What force is needed to accelerate a 18 kg mass at 7 m/s²?
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Answer: A — 126 N
F = ma = 18 × 7 = 126 N.
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Q9.Which mirror is used as a rear-view mirror in vehicles?
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Answer: D — Convex
Convex mirrors give an erect, diminished image and a wide field of view.
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Q10.Find the power dissipated when 1.5 A flows through a 8 Ω resistor.
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Answer: C — 18 W
P = I²R = 1.5² × 8 = 18 W.
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 JEE Main
Joint Entrance Examination (Main) — conducted by National Testing Agency (NTA). India’s national engineering entrance for NITs, IIITs and other institutes, and the qualifier for JEE Advanced.
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.
JEE Main practice topics
| Topic | Section | Question source |
|---|---|---|
| Algebra | Mathematics | Calculated (new numbers every set) |
| Geometry & Mensuration | Mathematics | Calculated (new numbers every set) |
| Probability & Combinatorics | Mathematics | Calculated (new numbers every set) |
| Physics | Science | Calculated + question bank |
| Chemistry | Science | Calculated + question bank |