Home › JEE Main › Physics › Mechanical Properties of Solids › The I-shaped cross-section of bridge beams cuts …
The I-shaped cross-section of bridge beams cuts weight and cost without losing:
AColouring
BWarmness
CLustre
DStrength
Answer & Solution
Correct answer: D. Strength
1. The section gives a wide load-bearing surface.
2. It keeps enough depth to prevent bending.
3. So weight drops but strength stays.
_Source: NCERT Class 11 Physics Part II, Chapter 9, Mechanical Properties of Solids._
Related questions
A crane rope is usually a bundle of thin wires braided together, which gives flexibility aSteel is more elastic than copper, brass and aluminium, so steel is preferred in:The shear stress at a mountain's base must stay below the critical stress at which rocks:Elastic properties of rocks limit the maximum height of a mountain on Earth to about:A very deep, thin beam may bend sideways under load. This is called:To reduce the bending of a beam, it is more effective to increase its:A bridge must withstand traffic load, wind force and its own:Cranes lift heavy loads using a thick: