Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 151 - 156 of 190

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Question number: 151

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

A steel wire is 4.0 m long and 2 mm in diameter. Young’s modulus of steel is 1.96 x 10 11 N/m 2. If a mass of 20 kg is suspended from it the elongation produced will be -

Choices

Choice (4) Response

a.

0.64 mm

b.

127 mm

c.

2.54 mm

d.

0.27 mm

Question number: 152

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

A beaker contains 200 gm of water. The heat capacity the beaker is equal to that of 20 gm of water. The initial temperature of water in the beaker is 20°C. If 440 gm hot water at 92°C is poured in it, the final temperature (neglecting radiation loss) will be nearest to

Choices

Choice (4) Response

a.

68°C

b.

73°C

c.

58°C

d.

78°C

Question number: 153

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

A stress of l kg/mm 2 is applied on a wire. If the modulus of elasticity of the wire is 10 10 dyne/cm 2, then the percentage increase in the length of the wire will be

Choices

Choice (4) Response

a.

98

b.

9.8

c.

0.0098

d.

0.007

Question number: 154

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

Question

A spring is stretched by 6 cm when a load of 5.4 × 10 6 dyne is suspended from it. Work done will be

Choices

Choice (4) Response

a.

16.2 × 10 6 erg

b.

8 × 10 6 J

c.

8.1 × 10 6 erg

d.

8.1 × 10 6 J

Passage

Read the passage given below and answer the questions that follow:

There is a small mercury drop of radius 5.0 mm. A surface P of area 2.0 mm 2 is placed at the top of the drop. Atmospheric pressure = 10 5 Pa. Surface tension of mercury = 0.465 N/m. Gravity effect is negligible.

Question number: 155 (1 of 2 Based on Passage) Show Passage

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

The force exerted by mercury drop on the surface P is

Choices

Choice (4) Response

a.

0.3 N

b.

1.3456 N

c.

0.10086 N

d.

0.10023 N

Question number: 156 (2 of 2 Based on Passage) Show Passage

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

The force exerted by air on surface P is

Choices

Choice (4) Response

a.

0.2 N

b.

0.1 N

c.

1.0023 N

d.

2.0 N

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