Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 67 - 70 of 190

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Question number: 67

» Properties of Solids & Liquids » Elastic Behavior

Assertion-Reason▾

Assertion (Ꭺ)

Steel is more elastic than rubber.

Reason (Ꭱ)

Under given deforming force, steel is deformed less than rubber.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

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

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 68

» Properties of Solids & Liquids » Application of Surface Tension

Assertion-Reason▾

Assertion (Ꭺ)

A large soap bubble expands while a small bubble shrinks, when they are connected to each other by capillary tube.

Reason (Ꭱ)

The excess pressure inside bubble (or drop) is inversely proportional to the radius.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

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

Question number: 69

» Properties of Solids & Liquids » Terminal Velocity

MCQ▾

Question

Water is filled in a cylindrical container to a height of 3m. The ratio of the cross-sectional area of the orifice and the beaker is 0.2. The square of the speed of the liquid coming out from the orifice at height 0.525 is, (g = 10m/s 2)

Choices

Choice (4) Response

a.

50.64 m 2 /s 2

b.

52.43. m 2 /r

c.

51.56 m 2 /s 2

d.

50.55 m 2 /s 2

Question number: 70

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

Question

A brass rod is to support a load of 400 N. If its elastic limit is 4.0 × l0 8 N/m 2 its minimum diameter must be -

Choices

Choice (4) Response

a.

2.26mm

b.

1.13mm

c.

4.52mm

d.

3.71mm

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