NEET 2017 | Properties of Matter Question 28 | Physics

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 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 81 English

NEET 2017 Physics - Properties of Matter Question 81 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 U tube with both ends open to the atmosphere, is partially filled with water. Oil, which is immiscible with water, is poured into one side until it stands at a distance of 10 mm above the water level on the other side. Meanwhile the water rises by 65 mm from its original level (see diagram). The density of the oil is

NEET 2017 Physics - Properties of Matter Question 78 English

NEET 2017 Physics - Properties of Matter Question 78 English

425 kg m^$$-$$3

800 kg m^$$-$$3

928 kg m^$$-$$3

650 kg m^$$-$$3

NEET 2017

MCQ (Single Correct Answer)

-1

The bulk modulus of a spherical object is 'B'. If it is subjected to uniform pressure 'P', the fractional decrease in radius is

$${B \over {3p}}$$

$${{3p} \over B}$$

$${p \over {3B}}$$

$${p \over B}$$

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NEET Subjects

Biology

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution