NEET 2016 Phase 2 | Heat and Thermodynamics Question 39 | Physics

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

The temperature inside a refrigerator is t₂ ^oC. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

$${{{t_1}} \over {{t_1} - {t_2}}}$$

$${{{t_1} + 273} \over {{t_1} - {t_2}}}$$

$${{{t_2} + 273} \over {{t_1} - {t_2}}}$$

$${{{t_1} + {t_2}} \over {{t_1} + 273}}$$

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A refrigerator works between 4^oC and 30^oC. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules)

236.5 W

2365 W

2.365 W

23.65 W

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then

Compressing the gas isothermally or adiabatically will require the same amount of work.

Which of the case (whether compression through isothermal or through adiabatic process) requires more work will depend upon the atomicity of the gas.

Compressing the gas isothermally will require more work to be done.

Compressing the gas through adiabatic process will require more work to be done.

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

The molecules of a given mass of a gas have r.m.s. velocity of 2000 m s^$$-$$1 at 27^oC and 1.0 $$ \times $$ 10⁵ N m^$$-$$2 pressure. When the temperature and pressure of the gas are respectively, 127^oC and 0.05 $$ \times $$ 10⁵ N m^$$-$$2, the r.m.s. velocity of its molecules in m s^$$-$$1 is

$${{100\sqrt 2 } \over 3}$$

$${{100} \over 3}$$

$$100\sqrt 2 $$

$${{400} \over {\sqrt 3 }}$$

PREVIOUS NEXT

NEET Subjects

Browse all chapters by subject

Biology

Botany

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