Practice question

MCQ

Question

If an iron ball and a wooden ball of same radii are released from a height ‘h’ in vacuum then time taken by both of them to reach ground will be:

Options

Choose one · Correct answer highlighted

Unequal Exactly equal Correct Iron ball will take double the time as compared to wooden ball Wooden ball will take double the time as compared to iron ball

Explanation

In vacuum no air resistance, acceleration due to gravity is independent of mass or composition per equivalence principle. Both balls start from rest and follow h equals half g t squared. Therefore they reach ground simultaneously despite different densities.

Share this question

Discussion

Comments

0 comments

Please log in to join the discussion.

No comments yet. Be the first to start the discussion.

Related blogs

Guides and insights connected to this topic

Class X Science 13 Sep 2026

Sources of Energy Notes - Conventional vs Non-Conventional, Solar, Nuclear and Environmental Impact

Explore class 10 notes on energy sources, comparing conventional and non‑conventional types, including solar and nuclear power and their environmental impact.

Class X Science 11 Sep 2026

Our Environment Notes - Ecosystem, Food Chain, Ozone Depletion and Waste Management

Revision notes on our environment covering biotic and abiotic factors, ecosystems, food chains, ozone depletion, and waste management practices.

Cell Biology 29 Aug 2026

Anisocytosis: Definition, Types, RDW, Causes, Symptoms, Diagnosis, Treatment and Prevention

What anisocytosis means, how RDW measures red cell size variation, its types, common causes such as iron and B12 deficiency, plus diagnosis and treatment.