Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Units and Measurements

Question:

Match List I with List II and select the correct answer using the codes given below the lists:

Column - I

Column - II

A. Boltzmann constant

(p) $[ML^{-2}T^{-1}]$

B. Coefficient of viscosity

(q) $[ML^{–1}T^{–1}]$

C. Planck constant

(r) $[MLT^{–3}K^{–1}]$

D. Thermal conductivity

(s) $[ML^2T^{–2}K^{–1}]$

Options:

A → p ; B→ q ; C→ s ; D→ r

A → s ; B→ q ; C→ p ; D→ r

A → q ; B→ r ; C→ p ; D→ s

A → r ; B→ q ; C→ s ; D→ p

Correct Answer:

A → s ; B→ q ; C→ p ; D→ r

Explanation:

The correct answer is Option (2) → A → s ; B→ q ; C→ p ; D→ r

Boltzmannn constant = $\frac{R}{N}=\frac{PV}{nTN}=\frac{ML^{-1}T^{-2}×L^3}{K}= ML^2T^{-2}K^{-1}$

Coefficient of viscosity = $\frac{F}{6πrv}=\frac{MLT^{−2}}{L×LT^{-1}}= ML^{−1}T^{−1}$

Planck constant = $\frac{E}{\nu }=\frac{ML^2T^{-2}}{T^{-1}}=ML^{-2}T^{-1}$

Thermal conductivity = $\frac{Hl}{tAΔT}=\frac{ML^2T^{-2}×L}{T×L^2×K}= MLT^{–3}K^{–1}$