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10th Science Unit 1 Important Questions 2026-27

10th Science Important Questions

10th Science Unit 1 Important Questions 2026-27   10th Science Unit 1 Important Questions 2026-27 to ace your upcoming board exams.? Unit 1 (Laws of Motion) with our comprehensive guide featuring solved book-back questions, critical interior questions, and repeated public exam problems. This curated study material breaks down complex physics concepts—like Newton’s laws, inertia, and momentum—into easy-to-learn short answers and detailed long answers. 

* List the top 2-mark and 5-mark questions.

* Provide the key formulas and solved problems for Unit 1.

* Share time-management tips for the science board exam.

10th Science Unit 1 Important Questions

•    1. Define inertia. Give its classification.

•    2. Classify the types of force based on their application.

•    3. If a 5 N and a 15 N forces are acting opposite to one another. Find the resultant force and the direction of action of the resultant force

•    4. Differentiate mass and weight.

•    5. Define moment of a couple.

•    6. State the principle of moments.

•    7. State Newton's second law.

•    8. Why a spanner with a long handle is preferred to tighten screws in heavy vehicles?

•    9. While catching a cricket ball the fielder lowers his hands backwards. Why?

•    10. How does an astronaut float in a space Shuttle?

•    11. Two bodies have a mass ratio of 3:4 The force applied on the bigger mass produces an acceleration of 12 $\text{m/s}^2$.What could be the acceleration of the other body, if the same force acts on it.

•    12. A ball of mass 1 kg moving with a speed of 10 m/s rebounds after a perfect elastic collision with the floor. Calculate the change in linear momentum of the ball.

•    13. A mechanic unscrew a nut by applying a force of 140 N with a spanner of length 40 cm. What should be the length of the spanner if a force of 40 N is applied to unscrew the same nut?

•    14. The ratio of masses of two planets is 2:3 and the ratio of their radii is 4:7 Find the ratio of their accelerations due to gravity

•    15. Write the torque application .

•    16. prove that F = ma