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PHXI11:THERMAL PROPERTIES OF MATTER

366708 A metal cube of length $10.0 m m$ at $0^{\circ} C$ is heated to $200^{\circ} C$ . Its coefficient of linear expansion is $2 \times 10^{- 5^{\circ}} C^{- 1}$ . The percent change of its volume is

1 0.2

2 0.1

3 1.2

4 0.4

Explanation:

Percentage change in volume $= γ t \times 100$ $= 3 α t \times 100 = 300 α t = 300 \times 2 \times 10^{- 5} \times 200 = 1.2$

PHXI11:THERMAL PROPERTIES OF MATTER

366709 A solid ball of metal has a concentric spherical cavity with in it. If the ball is heated, the volume of the cavity will

1 Decrease

2 Increase

3 Remain unaffected

4 None of these

PHXI11:THERMAL PROPERTIES OF MATTER

366710 Two holes of different radii $r_{1}$ and $r_{2} (r_{1} > r_{2})$ are cut in a metal sheet. If the sheet is heated
supporting img

1 Both

r_{1}

and

r_{2}

will decrease

2

r_{1}

will increase,

r_{2}

will decrease

3 Both

r_{1}

and

r_{2}

will increase

4

r_{1}

will decrease,

r_{2}

will increase

PHXI11:THERMAL PROPERTIES OF MATTER

366711 If an angular disc of radii $r_{1}$ and $r_{2}$ is heated, then
supporting img

1

r_{1}

increases,

r_{2}

decreases

2

r_{2}

increases,

r_{1}

decreases

3

r_{2}

increases,

r_{1}

remains unchanged

4 Both

r_{1}

and

r_{2}

increases.

Explanation:

The hole also expands and hence values of $r_{1}, r_{2}$ increases

PHXI11:THERMAL PROPERTIES OF MATTER

366708 A metal cube of length $10.0 m m$ at $0^{\circ} C$ is heated to $200^{\circ} C$ . Its coefficient of linear expansion is $2 \times 10^{- 5^{\circ}} C^{- 1}$ . The percent change of its volume is

1 0.2

2 0.1

3 1.2

4 0.4

Explanation:

Percentage change in volume $= γ t \times 100$ $= 3 α t \times 100 = 300 α t = 300 \times 2 \times 10^{- 5} \times 200 = 1.2$

PHXI11:THERMAL PROPERTIES OF MATTER

366709 A solid ball of metal has a concentric spherical cavity with in it. If the ball is heated, the volume of the cavity will

1 Decrease

2 Increase

3 Remain unaffected

4 None of these

PHXI11:THERMAL PROPERTIES OF MATTER

366710 Two holes of different radii $r_{1}$ and $r_{2} (r_{1} > r_{2})$ are cut in a metal sheet. If the sheet is heated
supporting img

1 Both

r_{1}

and

r_{2}

will decrease

2

r_{1}

will increase,

r_{2}

will decrease

3 Both

r_{1}

and

r_{2}

will increase

4

r_{1}

will decrease,

r_{2}

will increase

PHXI11:THERMAL PROPERTIES OF MATTER

366711 If an angular disc of radii $r_{1}$ and $r_{2}$ is heated, then
supporting img

1

r_{1}

increases,

r_{2}

decreases

2

r_{2}

increases,

r_{1}

decreases

3

r_{2}

increases,

r_{1}

remains unchanged

4 Both

r_{1}

and

r_{2}

increases.

Explanation:

The hole also expands and hence values of $r_{1}, r_{2}$ increases

PHXI11:THERMAL PROPERTIES OF MATTER

366708 A metal cube of length $10.0 m m$ at $0^{\circ} C$ is heated to $200^{\circ} C$ . Its coefficient of linear expansion is $2 \times 10^{- 5^{\circ}} C^{- 1}$ . The percent change of its volume is

1 0.2

2 0.1

3 1.2

4 0.4

Explanation:

Percentage change in volume $= γ t \times 100$ $= 3 α t \times 100 = 300 α t = 300 \times 2 \times 10^{- 5} \times 200 = 1.2$

PHXI11:THERMAL PROPERTIES OF MATTER

366709 A solid ball of metal has a concentric spherical cavity with in it. If the ball is heated, the volume of the cavity will

1 Decrease

2 Increase

3 Remain unaffected

4 None of these

PHXI11:THERMAL PROPERTIES OF MATTER

366710 Two holes of different radii $r_{1}$ and $r_{2} (r_{1} > r_{2})$ are cut in a metal sheet. If the sheet is heated
supporting img

1 Both

r_{1}

and

r_{2}

will decrease

2

r_{1}

will increase,

r_{2}

will decrease

3 Both

r_{1}

and

r_{2}

will increase

4

r_{1}

will decrease,

r_{2}

will increase

PHXI11:THERMAL PROPERTIES OF MATTER

366711 If an angular disc of radii $r_{1}$ and $r_{2}$ is heated, then
supporting img

1

r_{1}

increases,

r_{2}

decreases

2

r_{2}

increases,

r_{1}

decreases

3

r_{2}

increases,

r_{1}

remains unchanged

4 Both

r_{1}

and

r_{2}

increases.

Explanation:

The hole also expands and hence values of $r_{1}, r_{2}$ increases

PHXI11:THERMAL PROPERTIES OF MATTER

366708 A metal cube of length $10.0 m m$ at $0^{\circ} C$ is heated to $200^{\circ} C$ . Its coefficient of linear expansion is $2 \times 10^{- 5^{\circ}} C^{- 1}$ . The percent change of its volume is

1 0.2

2 0.1

3 1.2

4 0.4

Explanation:

Percentage change in volume $= γ t \times 100$ $= 3 α t \times 100 = 300 α t = 300 \times 2 \times 10^{- 5} \times 200 = 1.2$

PHXI11:THERMAL PROPERTIES OF MATTER

366709 A solid ball of metal has a concentric spherical cavity with in it. If the ball is heated, the volume of the cavity will

1 Decrease

2 Increase

3 Remain unaffected

4 None of these

PHXI11:THERMAL PROPERTIES OF MATTER

366710 Two holes of different radii $r_{1}$ and $r_{2} (r_{1} > r_{2})$ are cut in a metal sheet. If the sheet is heated
supporting img

1 Both

r_{1}

and

r_{2}

will decrease

2

r_{1}

will increase,

r_{2}

will decrease

3 Both

r_{1}

and

r_{2}

will increase

4

r_{1}

will decrease,

r_{2}

will increase

PHXI11:THERMAL PROPERTIES OF MATTER

366711 If an angular disc of radii $r_{1}$ and $r_{2}$ is heated, then
supporting img

1

r_{1}

increases,

r_{2}

decreases

2

r_{2}

increases,

r_{1}

decreases

3

r_{2}

increases,

r_{1}

remains unchanged

4 Both

r_{1}

and

r_{2}

increases.

Explanation:

The hole also expands and hence values of $r_{1}, r_{2}$ increases

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