alleryThe 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: syllabus Physics Part II, Chapter 9, Mechanical Properties of Solids._
Keep practising Mechanical Properties of Solids and Fluids
Browse all Mechanical Properties of Solids and Fluids questions for CBSE Class 11 (Science), or explore more Physics topics.
Related questions
Which statement about Hooke's law for a metal wire is correct?A wire hangs from a ceiling with weight F at its end. What is the tensile stress at any crWhich elastic modulus is defined as the ratio of tensile stress to tensile strain?A rubber-like elastomer is notable in elasticity because it does what?For which states of matter is the bulk modulus meaningful?Why is stress not treated as a vector quantity even though force is?Which value is nearest to Poisson's ratio of aluminium alloys?Within what range does Poisson's ratio lie for steels?