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Properties of Matter question

2007 · Shift 2 · Q30
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  5. /2007 · Shift 2 · Q30

Properties of Matter question

2007 · Shift 2 · Q30

JEE AdvancedPhysicsProperties of MatterMCQ+4 / −1

Column I gives some devices and Column II gives some process on which the functioning of these devices depend. Match the devices in Column I with the processes in Column II and indicate your answer by darkening appropriate bubbles in the 4×44 \times 44×4 matrix given in the ORS.

Column I Column II
(A) Bimetallic strip (P) Radiation from a hot body
(B) Steam engine (Q) Energy conversion
(C) Incandescent lamp (R) Melting
(D) Electric fuse (S) Thermal expansion

  1. A
    [A→(Q,S);B→(R);C→(P);D→(R)][\mathrm{A} \rightarrow(\mathrm{Q, S}); \mathrm{B} \rightarrow(\mathrm{R}); \mathrm{C} \rightarrow(\mathrm{P}); \mathrm{D} \rightarrow(\mathbf{R})][A→(Q,S);B→(R);C→(P);D→(R)]
  2. B
    [A→(R,S);B→(R);C→(P);D→(R,S)][\mathrm{A} \rightarrow(\mathrm{R, S}); \mathrm{B} \rightarrow(\mathrm{R}); \mathrm{C} \rightarrow(\mathrm{P}); \mathrm{D} \rightarrow(\mathbf{R, S})][A→(R,S);B→(R);C→(P);D→(R,S)]
  3. C
    [A→(S);B→(Q);C→(P);D→(R)][\mathrm{A} \rightarrow(\mathrm{S}); \mathrm{B} \rightarrow(\mathrm{Q}); \mathrm{C} \rightarrow(\mathrm{P}); \mathrm{D} \rightarrow(\mathbf{R})][A→(S);B→(Q);C→(P);D→(R)]
  4. D
    [A→(P,S);B→(R);C→(P);D→(R)][\mathrm{A} \rightarrow(\mathrm{P, S}); \mathrm{B} \rightarrow(\mathrm{R}); \mathrm{C} \rightarrow(\mathrm{P}); \mathrm{D} \rightarrow(\mathbf{R})][A→(P,S);B→(R);C→(P);D→(R)]
View written solutionFree

Correct answer: C

  1. Identify the governing process for each device

    We match each device in Column I with the physical process in Column II.

    (A) Bimetallic strip

    • A bimetallic strip works because two metals have different coefficients of thermal expansion.
    • On heating, one expands more than the other, causing bending.
    • Hence it depends on thermal expansion.

    So, A→SA \to SA→S

    (B) Steam engine

    • A steam engine converts heat energy of steam into mechanical work.
    • So the essential process is energy conversion.

    Thus, B→QB \to QB→Q

    (C) Incandescent lamp

    • In an incandescent lamp, the filament gets heated to a high temperature and emits light.
    • This is due to radiation from a hot body.

    Therefore, C→PC \to PC→P

    (D) Electric fuse

    • A fuse wire melts when excessive current flows due to Joule heating.
    • Its functioning depends on melting.

    Hence, D→RD \to RD→R

  2. Final matching

    A→S,B→Q,C→P,D→RA \to S, \quad B \to Q, \quad C \to P, \quad D \to RA→S,B→Q,C→P,D→R

  3. Compare with options

    This exactly matches Option C.

  4. Comparison with stored correct answer

    • Derived answer: C
    • Stored correct answer: C
    • They agree.
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