U1L1_SS&S_Quiz1_SE A

Asha: “Young’s modulus rises as we add more load.”Ravi: “No, it stays constant for the same material.” 

• Asha is right
• Ravi is right
• Both are right
• Neither

Neha: “Hooke’s law works at any stress level.”Adil: “Only inside the elastic limit.”

• Always true
• Only within elastic range
• Only after yield
• Valid for plastics only

Priya: “Big extension ⇒ high modulus.”Samir: “Big extension ⇒ low stiffness.”

• Priya
• Samir
• Both wrong
• Modulus unrelated to stretch

Rita: “Stress and strain are unrelated.”Nikhil: “They’re proportional (σ ∝ ε).”

• Rita
• Nikhil
• Both correct in plastic region
• Neither

Kunal: “Strain = Force / Area.”Meena: “That’s stress!”

• Kunal
• Meena
• Both wrong
• Strain has no units

Manav: “Rubber’s huge stretch means huge modulus.”Fatima: “No—huge stretch ⇒ low modulus.”

• Manav
• Fatima
• Both
• Depends on temperature

Sanjana: “Hooke’s law keeps working after yield.”Tariq: “It stops at the elastic limit.”

• Sanjana
• Tariq
• Both
• Valid only at fracture

Kabir: “Longer steel wire has lower modulus.”Riya: “Length doesn’t affect modulus.”

• Kabir
• Riya
• Both
• Depends on area

Lina: “Hooke said σ = E ε.”Dev: “He said ε = σ / E.”

• Lina
• Dev
• Both (same law)
• Neither

Rohan: “Young’s modulus is unit‑less.”Ishita: “It has units of Pa like stress.”

• Rohan
• Ishita
• Both
• Depends on system