NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1218 - 1221 of 2320

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Question number: 1218

» Properties of Solids & Liquids » Elastic Behavior

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MCQ▾

Question

The force required to separate two glass plates of area 3 ×10 -2 m -2 with a film of water 0.03 m thick between them, is (Surface tension of water is 70 × 10 -3 N/m)

Choices

Choice (4)Response

a.

280 N

b.

140 N

c.

130 N

d.

380 AT

Question number: 1219

» Properties of Solids & Liquids » Young's Modulus

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MCQ▾

Question

Which statements are false for a metal?

(a)

(b)

(c)

(d)

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

Choices

Choice (4)Response

a.

1,2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

Question number: 1220

» Properties of Solids & Liquids » Terminal Velocity

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Question

Water is filled in a cylindrical container to a height of 3 m. The ratio of the cross-sectional area of the orifice and the beaker is 0.1. The square of the speed of the liquid coming out from the orifice is (g = 10m/s 2)

Choices

Choice (4)Response

a.

52 m 2 /s

b.

50 m 2 /s 2

c.

51 m 2 /s 2

d.

50.5 m 2 /s 2

Question number: 1221

» Properties of Solids & Liquids » Elastic Behavior

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MCQ▾

Question

A uniform steel wire of density 7800 kg/m 3 is 2.5 m long and weighs 15.6 × 10 -3 kg. It extends by 1.25 mm when loaded by 8 kg. Calculate the value of young’s modulus of elasticity for steel.

Choices

Choice (4)Response

a.

19.6 × 10 11 N/m 2

b.

196 × 10 11 N/m 2

c.

1.96 × 10 11 N/m 2

d.

Question does not provide sufficient data or is vague

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