Properties of Solids & Liquids (JEE (Based on NTA Guidelines-IIT Engg.) Advanced Physics): Questions 1 - 3 of 16

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Question number: 1

» Properties of Solids & Liquids » Young's Modulus

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Appeared in Year: 2013

MCQ▾

Question

One end of a horizontal thick copper wire of length and radius is welded to an end of another horizontal thin copper wire of length and radius . When the arrangement is stretched by applying forces at two ends, the ratio of the elongation in the thin wire to that in the thick wire is:

Choices

Choice (4) Response

a.

0.50

b.

4.00

c.

2.00

d.

0.25

Question number: 2

» Properties of Solids & Liquids » Newton's Law of Cooling

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Appeared in Year: 2016

MCQ▾

Question

A water cooler of storage capacity can cool water at a constant rate of . In a closed circulation system (as shown schematically in the figure), the water from the cooler is used to cool an external device that generates constantly of heat (thermal load). The temperature of water fed into the device cannot exceed and the entire stored of water is initially cooled to . The entire system is thermally insulated. The minimum value of (in watts) for which the device can be operated for is:

A figure of Water cooler

A Figure of Water Cooler

In figure a water cooler is shown.

(Specific heat of water is and the density of water is )

Choices

Choice (4) Response

a.

2067

b.

1600

c.

2533

d.

3933

Question number: 3

» Properties of Solids & Liquids » Young's Modulus

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Appeared in Year: 2015

MCQ▾

Question

In plotting stress versus strain curves for two materials and , a student by mistake puts strain on the axis and stress on the axis as shown in the figure. Then the correct statement (s) is (are):

Plot of strain vs stress

Plot of Strain vs Stress

In figure plot of strain vs stress is shown.

Choices

Choice (4) Response

a.

has more tensile strength than

b.

The Young’s modulus of is more than that of

c.

is more ductile than

d.

Both a. and c. are correct

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