Thermal Properties of Matter Test

Result

Thermal Properties of Matter Test - 31

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Question 1
4 / -1

\'Stem Correction\'in platinum resistance thermometers are eliminated by the use of

A
Cells

B
Electrodes

C
Compensating leads

D
None of these
Question 2
4 / -1

The temperature of a body on Kelvin scale is found to be x K. When it is measured by Fahrenheit thermometer, it is found to be x^oF, then the value of x is

A
40

B
313

C
574.25

D
301.25

Solution
Question 3
4 / -1

Two bodies A and B have thermal emissivities of 0.01 and 0.81 respectively. The outer surface area of the two bodies are the same. The two bodies emit total radiate power at the same rate. The wavelength λ_B corresponding to maximum spectral radiancy in the radiation from B is shifted from the wavelength corresponding to maximum spectral radiancy in the radiation from A, by 1.00 μm. If the temperature of A is 5802 K
a. The temperature of B is 1934 K
b. λ_B = 1.5 μm
c. The temperature of B is 11604 K
d. The temperature of B is 2901 K

A
a and b

B
b and c

C
a, b and c

D
only a

Solution
Question 4
4 / -1

Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved?

A
A

B
B

C
Equal in both

D
Information is not sufficient
Question 5
4 / -1

A steel meter scale is to be ruled so that millimeter intervals are accurate within about 5 × 10^–5 mm at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel = 10 × 10^–6 K^–1)

A
2°C

B
5°C

C
7°C

D
10°C

Solution
Question 6
4 / -1

During illness an 80 kg man ran a fever of 102.2°F instead of normal body temperature of 98.6°F. Assuming that human body is mostly water, how much heat is required to raise his temperature by that amount?

A
100 kcal

B
160 kcal

C
50 kcal

D
92 kcal

Solution
Question 7
4 / -1

Two holes of unequal diameters d₁ and (d₁ > d₂) are cut in a metal sheet. If the sheet is heated

A
Both d₁ and d₂ will decrease

B
Both d₁ and d₂ will increase

C
d₁ will increase, d₂ will decrease

D
d₁ will decrease, d₂ will increase
Question 8
4 / -1

If earth suddenly stops rotating about its own axis , the increase in it\'s temperature will be

A

B

C

D
None of these

Solution
Question 9
4 / -1

Latent heat of ice is 80 cal/g. A man melts 60 g of ice by chewing in 1 minute. His power is

A
4800 W

B
336 W

C
1.33 W

D
0.75 W

Solution
Question 10
4 / -1

If there are no heat losses, the heat released by the condensation of x g of steam at 100°C into water at 100°C can be used to convert y gm of ice at 0°C into water at 100°C. Then the ratio y : x is nearly

A
1 : 1

B
2.5 : 1

C
2 : 1

D
3 : 1

Solution