Properties of Solids & Liquids [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 46 - 48 of 453

Choose Programs:

📹 Video Course 2024 (8 Lectures [3 hrs : 4 mins]): Offline Support

Rs. 100.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

⏳ 🎯 Online Tests (5 Tests [50 questions each]): NTA Pattern, Analytics & Explanations

Rs. 500.00 -OR-

3 Year Validity (Multiple Devices)

Sample TestsDetailsSee Demo

🎓 Study Material (575 Notes): 2024-2025 Syllabus

Rs. 650.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 5119 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 750.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 46

Question MCQ▾

A composite metal bar of uniform section is made up of length 15 cm of copper, 10 cm of nickel and 5 cm of aluminum. Each part being in perfect thermal contact with the adjoining part. The copper end of the composite rod is maintained at 100°C and the aluminum end at 0°C. The whole rod is covered with belt so that there is no heat loss occurs at the sides. If KCu = 2Kal and Ka1 = 3KNi, then what will be the temperatures of Cu - Ni and Ni - Al junctions respectively,

Choices

Choice (4)Response

a.

50°C and 30°C

b.

30°C and 50°C

c.

83.33°C and 20°C

d.

23.33°C and 78.8°C

Edit

Question 47

Question MCQ▾

An incompressible liquid flows through a horizontal tube as shown in trite following fig. Then the velocity v of the fluid is

Flow of Horizontal Fluid - The Velocity V of the Fluid

Choices

Choice (4)Response

a.

2.25 m/s

b.

1.0 m/s

c.

3.0 m/s

d.

1.5 m/s

Edit

Question 48

Question MCQ▾

A wire of cross sectional area 4mm2 is just stretched between two fixed points at a temperature of 20°C. Determine the tension when the temperature falls to 20°C. Coefficient of linear expansion a = 10-5 /°C and Y = 2 × 1011 N/m2 .

Choices

Choice (4)Response

a.

220 N

b.

160 N

c.

120 N

d.

120 KN

Edit