Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 62 - 66 of 190

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Question number: 62

» Properties of Solids & Liquids » Modulus of Rigidity

MCQ▾

Question

The compressibility of water is 5 × 10 -10 m 2 /N. If it is subjected to a pressure of 15 MPa the fractional decrease in volume will be -

Choices

Choice (4) Response

a.

7.5 ×10 -3

b.

1.5 × 10 -2

c.

5.6 × 10 -4

d.

3.3 × 10 -5

Question number: 63

» Properties of Solids & Liquids » Hooke's Law

MCQ▾

Question

A wire of length lm and area of cross section 4 × 10 -8 m 2 increases in length by 0.2 cm when a force of 16 N is applied. Value of Y for the material of the wire will be

Choices

Choice (4) Response

a.

2 × l0 11 N/mm 2

b.

2 × 10 11 kg/m 2

c.

2 × l0 6 N/m 2

d.

2 × 10 11 N/m 2

Question number: 64

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

The temperature at which the surface tension of water is zero

(1) 370° C

(2) 0° C

(3) Slightly less than 647 K

(4) 277 K

select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

1 and 3 are correct

Question number: 65

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

Question

The work done in increasing the length of a one meter long wire of cross-sectional area 1mm 2 through 1mm will be

(Y = 3 × 10 11 N/m 2)

Choices

Choice (4) Response

a.

10 J

b.

0.1 J

c.

250 J

d.

0.15 J

Question number: 66

» Properties of Solids & Liquids » Latent Heat

Assertion-Reason▾

Assertion (Ꭺ)

Latent heat of fusion of ice is 336000 J kg -1

Reason (Ꭱ)

Latent heat refers to change of state without any change in temperature.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

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