JEE Main Physics Practice Set 1
Original JEE Main style physics practice questions with answer explanations and pattern-based difficulty.
Exam Pattern & Rules
Negative Marking: Yes, in Section A and Section B
Note: Paper contains 90 questions (30 per subject), with 75 attempted as per the current exam attempt structure.
Practice Set Details
JEE Main Physics Practice Set 1: all 6 questions with answers
Try each question first, then open “Show answer” to check the correct option and explanation.
Q1.A body moves with constant acceleration of 2 m/s². What is its velocity after 5 seconds if initial velocity is 4 m/s?
- A.10 m/s
- B.14 m/s
- C.6 m/s
- D.12 m/s
Show answer
Correct answer: B. 14 m/s
Use v = u + at. v = 4 + (2 × 5) = 14 m/s.
Q2.Which of the following is the SI unit of electric resistance?
- A.Ohm
- B.Ampere
- C.Volt
- D.Watt
Show answer
Correct answer: A. Ohm
Resistance is measured in ohms.
Q3.A ray of light enters water from air. Which quantity remains constant?
- A.Speed
- B.Frequency
- C.Wavelength
- D.Direction
Show answer
Correct answer: B. Frequency
Frequency remains constant when light moves between media.
Q4.A 2 kg mass is lifted 5 m vertically upward. What is the increase in gravitational potential energy? (g = 10 m/s²)
- A.50 J
- B.100 J
- C.20 J
- D.10 J
Show answer
Correct answer: B. 100 J
ΔPE = mgh = 2 × 10 × 5 = 100 J.
Q5.Which force acts to oppose the relative motion between two surfaces in contact?
- A.Gravitational force
- B.Normal force
- C.Frictional force
- D.Tension force
Show answer
Correct answer: C. Frictional force
Friction opposes relative motion between surfaces.
Q6.An object is moving in uniform circular motion. Which statement is true?
- A.Speed changes constantly
- B.Velocity is constant
- C.Centripetal force acts toward the center
- D.No force acts on the object
Show answer
Correct answer: C. Centripetal force acts toward the center
In uniform circular motion, centripetal force acts toward the center of the circle.