AIPMT 2014 | Properties of Matter Question 55 | Physics

AIPMT 2014

MCQ (Single Correct Answer)

-1

Certain quantity of water cools from 70^oC to 60^oC in the first 5 minutes and to 54^oC in the next 5 minutes. The temperature of the surroundings is

45^oC

20^oC

42^oC

10^oC

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

The density of water at 20^oC is 998 kg/m³ and at 40^oC is 992 kg/m³. The coefficient of volume expansion of water is

3 $$ \times $$ 10^$$-$$4/^oC

2 $$ \times $$ 10^$$-$$4/^oC

6 $$ \times $$ 10^$$-$$4/^oC

10 $$ \times $$ 10^$$-$$4/^oC

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

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 57 English

NEET 2013 (Karnataka) Physics - Properties of Matter Question 57 English

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

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

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

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

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