AIPMT 2014 | Properties of Matter Question 50 | Physics

AIPMT 2014

MCQ (Single Correct Answer)

-1

Copper of fixed volume V is drawn into wire of length $$l$$. When this wire is subjected to a constant force F, the extension produced in the wire is $$\Delta $$$$l$$. Which of the following graphs is a straight line ?

$$\Delta $$$$l$$ versus 1/$$l$$

$$\Delta $$$$l$$ versus $$l$$²

$$\Delta $$$$l$$ versus 1/$$l$$²

$$\Delta $$$$l$$ versus $$l$$

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

If the ratio of diameters, lengths and Young's modulus of steel and copper wires shown in the figure are p, q and s respectively, then the corresponding ratio of increase in their lengths would be

NEET 2013 (Karnataka) Physics - Properties of Matter Question 52 English

NEET 2013 (Karnataka) Physics - Properties of Matter Question 52 English

$$\left( {{{5q} \over {7s{p^2}}}} \right)$$

$$\left( {{{7q} \over {5s{p^2}}}} \right)$$

$$\left( {{{2q} \over {5sp}}} \right)$$

$$\left( {{{7q} \over {5sp}}} \right)$$

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

Two metal rods 1 and 2 of same lengths have same temperature difference between their ends. Their thermal conductivities are K₁ and K₂ and cross sectional areas A₁ and A₂, respectively. If the rate of heat conduction in 1 is four times that in 2, then

K₁A₁ = 4K₂A₂

K₁A₁ = 2K₂A₂

4K₁A₁ = K₂A₂

K₁A₁ = K₂A₂

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?

The velocity is maximum at the narrowest part of the pipe and pressure is maximum at the widest part of the pipe.

Velocity and pressure both are maximum at the narrowest part of the pipe.

velocity and pressure both are maximum at the widest part of the pipe.

The velocity is minimum at the narrowest part of the pipe and the pressure is minimum at the widest part of the pipe.

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