Properties of Solids & Liquids (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 30  33 of 190
Visit this page to view all the question topics
To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 30
» Properties of Solids & Liquids » Elastic Behavior
Question
The ratio of radii of two wires of same material is 2: 1. If these wires are stretched by equal forces, then the ratio of stresses produced in them will be
Choices
Choice (4)  Response  

a.  4: 1 

b.  1: 2 

c.  2: 1 

d.  1: 4 

To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 31
» Properties of Solids & Liquids » Heat Transfer » Conduction
Question
A cylindrical rod with one end in a steam chamber and it other end in ice results in melting of 0.3 gm of ice per second. If the rod is replaced by another with half the length and double the radius of the first and if the thermal conductivity of material of second rod is that of first, the rate at which ice melts in gm/sec will be
Choices
Choice (4)  Response  

a.  3.2 

b.  0.6 

c.  0.1 

d.  0.2 

To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 32
» Properties of Solids & Liquids » Surface Energy and Surface Tension
Assertion (Ꭺ)
The velocity increases, when water flowing in broader pipe enters a narrow pipe.
Reason (Ꭱ)
According to equation of continuity, product of area and velocity is constant.
Choices
Choice (4)  Response  

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

b.  Ꭺ is true but Ꭱ is false 

c.  Both Ꭺ and Ꭱ are false 

d.  Ꭺ is false but Ꭱ is true 

To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 33
» Properties of Solids & Liquids » Young's Modulus
Question
The Young’s modulus of steel is 2 × 10 ^{11} N/m ^{2} and its coefficient of linear expansion is 1.1 × 10 ^{5} per degree. The pressure to be applied to the ends of a steel cylinder to keep its length constant on raising its temperature by 80°C, will be 
Choices
Choice (4)  Response  

a.  2.2 × 10 ^{8} N/m ^{2} 

b.  5.5 × 10 ^{4} N/m ^{2} 

c.  1.8 × 10 ^{6} N/m ^{2} 

d.  1.76 × 10 ^{8 N} /m ^{2} 

To view these problems with solutions proceed here and click "Subscribe Now".