NSEJS Physics Most Important Questions, Download PDF

NSEJS Physics Most Important Questions

1. A lift is moving downwards with constant velocity 10 m/s. A coin is dropped from the lift, find velocity of coin at the same instant when it is dropped in frame of lift:

(A) 10 m/s upward

(B) 10 m/s downward

(C) 0 m/s '

(D) None of these

Sol. (C)

2. Two identical charges, 10µC each, are in the air. What is the largest charge to be transferred from one charge to another, so that their interaction force decreases 5 times?

3. A man moves in an open field such that after moving 10 m in a straight line, he makes a sharp turn of 60° to his left. The total displacement of the man just after 7 such turns is

(A) 10 m

(B) 20 m

(C) 70 m

(D) 30 m

Sol. (A) Displacement just after 7 turns = 10 m

4. A 20 N force is applied on Q. All surfaces are smooth. Mass of P & Q are 10 kg each. What is the acceleration of P?

(A) 0 m/s2

(B) 1 m/s2

(C) 2 m/s2

(D) 3 m/s2

Sol. (A)

5. A Liquid [non-viscous, incompressible] is flowing through a horizontal pipe of variable cross section. Selection Correct option(s).

(A) Speed of liquid at section b is more than section a.

(B) The volume of liquid flowing per second from section a is more than section b.

(C) The mass of liquid flowing per second at both the section is same.

(D) The pressure at section-b is less than section a.

Sol. (A, C, D)

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Benefits of Practising NSEJS Physics Important Questions

1. Deepens Conceptual Understanding: The questions are designed to test and reinforce a strong grasp of fundamental physics concepts, often at a level more advanced than typical school exams. This helps students develop a deeper and more robust understanding of the subject.
2. Enhances Problem-Solving and Analytical Skills: Regular practice with challenging questions improves critical thinking, analytical reasoning, and the ability to apply concepts to unfamiliar situations, which are essential skills for both NSEJS and future competitive exams.
3. Prepares for Higher-Level Competitions: NSEJS is the first step in the Junior Science Olympiad pathway, leading to national and international stages. Practising important questions equips students to tackle more advanced exams like the Indian National Junior Science Olympiad (INJSO) and even the International Junior Science Olympiad (IJSO).
4. Boosts Exam Confidence and Speed: Familiarity with the exam pattern, types of questions (including multiple-correct MCQs), and time management strategies can significantly reduce exam anxiety and improve performance under timed conditions.
5. Provides National Benchmarking: By practising the NSEJS Physics Important questions you can evaluate standard of exam, students can assess their knowledge and skills relative to peers across India, identifying strengths and areas for improvement.