NEET 2017 | Properties of Matter Question 29 | Physics

NEET 2017

MCQ (Single Correct Answer)

-1

Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are K₁ and K₂. The thermal conductivity of the composite will be

NEET 2017 Physics - Properties of Matter Question 80 English

NEET 2017 Physics - Properties of Matter Question 80 English

$${{3\left( {{K_1} + {K_2}} \right)} \over 2}$$

$${K_1} + {K_2}$$

$$2\left( {{K_1} + {K_2}} \right)$$

$${{{K_1} + {K_2}} \over 2}$$

NEET 2017

MCQ (Single Correct Answer)

-1

A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be

450

1000

1800

225

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

Three liquids of densities $$\rho $$₁, $$\rho $$₂ and $$\rho $$₃ (with $$\rho $$₁ > $$\rho $$₂ > $$\rho $$₃), having the same value of surface tension T, rise to the same height in three identical capillaries. The angles of contact $$\theta $$₁, $$\theta $$₂ and $$\theta $$₃ obey

$${\pi \over 2} > {\theta _1} > {\theta _2} > {\theta _3} \ge 0$$

0 $$ \le $$ $$\theta $$₁ < $$\theta $$₂ < $$\theta $$₃ < $${\pi \over 2}$$

$${\pi \over 2} < {\theta _1} < {\theta _2} < {\theta _3} < \pi $$

$$\pi > {\theta _1} > {\theta _2} > {\theta _3} > {\pi \over 2}$$

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

Two identical bodies are made of a material for which the heat capacity increases with temperature. One of these is at 100^oC, while the other one is at 0^oC. If the two bodies are brought into contact, then, assuming no heat loss, the final common temperature is

50 ^oC

more than 50 ^oC

less than 50 ^oC but greater than 0 ^oC

0 ^oC

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