You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VII

Physics

Thermal Expansion

A metre rod o...

Question

A metre rod of silver at $0^{o}$ C is heated to $100^{o}$ C. It's length is increased by 0.19 cm. Coefficient of volume expansion of the silver rod is

5.7 x

10^{- 5} /^{o}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

0.63 x

10^{- 5} /^{o}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1.9 x

10^{- 5} /^{o}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

16.1 x

10^{- 5} /^{o}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 5.7 x $10^{- 5} /^{o}$ C
coefficient of linear expansion is $α = \frac{Δ l}{l Δ t} = \frac{0.0019}{100} = 1.9 \times 10^{- 5}$
Cofficient of volume expansion is $3 α = 5.7 \times 10^{- 5} /^{o} C$

Suggest Corrections

Similar questions

Q. At

50^{o} C

, a brass rod has a length 50 cm and a diameter 2 mm. it is joined to a steel rod of the same length and diameter at the same temperature. The change in the length of the composite rod when it is heated to

250^{o} C

is (coefficient of linear expansion of brass

= 2.0 \times 10^{- 5} / C

, coefficient of linear expansion of steel

= 1.2 \times 10^{- 5} / C

)

Q. A rod is measured to be of length

50 cm

10^{\circ} C

. Its length measured at

50^{\circ} C

x

. Find

x

, if thermal coefficient of linear expansion of the rod is

2 \times 10^{- 5} /^{\circ} C

and of the scale is

3 \times 10^{- 5} /^{\circ} C

Q. An aluminium measuring rod, which is correct at

5^{o} C

measures the length of a line as

80 c m

45^{o} C

. If thermal coefficient of linear expansion of aluminium is

2.50 \times 10^{- 5} p e r^{o} C

.The correct length of line is :

Q. A steel rod of length

1 m

is fixed between two walls. If the rod is heated from

25^{o} C

35^{o} C

, the stress developed in the rod is expressed as

x \times 10^{7} {N/m}^{2}

. Find the value of

x

.
(coefficient of expansion for steel is

2 \times 10^{- 5} /^{\circ} C

, Young's modulus of steel is

2 \times 10^{11} {N/m}^{2}

)

Q. A uniform metal rod of

2 m m

^{2}

cross section is heated from 0

^{o}

C to 20

^{o}

C. The coefficient of linear expansion of the rod is 12 x 10

^{- 6 / 0}

C. Its Young's modulus of elasticity is 10

^{11}

N/m

^{2}

. The energy stored per unit volume of the rod is :

Join BYJU'S Learning Program

A metre rod of silver at 0oC is heated to 100oC. It's length is increased by 0.19 cm. Coefficient of volume expansion of the silver rod is

The correct option is A 5.7 x 10−5/oCcoefficient of linear expansion is α=ΔllΔt=0.0019100=1.9×10−5Cofficient of volume expansion is 3α=5.7×10−5/oC

A metre rod of silver at $0^{o}$ C is heated to $100^{o}$ C. It's length is increased by 0.19 cm. Coefficient of volume expansion of the silver rod is

The correct option is A 5.7 x $10^{- 5} /^{o}$ C
coefficient of linear expansion is $α = \frac{Δ l}{l Δ t} = \frac{0.0019}{100} = 1.9 \times 10^{- 5}$
Cofficient of volume expansion is $3 α = 5.7 \times 10^{- 5} /^{o} C$