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JEE Main Physics Test- 10 - JEE MCQ


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25 Questions MCQ Test Mock Tests for JEE Main and Advanced 2025 - JEE Main Physics Test- 10

JEE Main Physics Test- 10 for JEE 2024 is part of Mock Tests for JEE Main and Advanced 2025 preparation. The JEE Main Physics Test- 10 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Physics Test- 10 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for JEE Main Physics Test- 10 below.
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JEE Main Physics Test- 10 - Question 1

For Boyle’s law to hold good, the gas should be

Detailed Solution for JEE Main Physics Test- 10 - Question 1
For Boyle's law gases must obey ideal gas equation
PV=nRT
Boyles law states that for a fixed amount of gas at constant temperature pressure is inversely proportional to its volume.i.e.PV=constant
JEE Main Physics Test- 10 - Question 2

A bulb contains 1 mole of hydrogen and 1 mole of oxygen at temperature T. The ratio of rms values of velocity of hydrogen molecules to that of oxygen molecule is

Detailed Solution for JEE Main Physics Test- 10 - Question 2
RMS speed sqroot of 3RT/M M=molar mass T=temp R=cont used it
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JEE Main Physics Test- 10 - Question 3

An ideal gas is heated from 270 to 6270 C at constant pressure. If initial volume was 4m3,then the final volume of gas will be

Detailed Solution for JEE Main Physics Test- 10 - Question 3

JEE Main Physics Test- 10 - Question 4

Critical temperature can be difined as the temperature

JEE Main Physics Test- 10 - Question 5

A molecule of mass m of an ideal gas collides with the wall of the vessel with the same velocity. The change in the linear momentum of the molecule will be

Detailed Solution for JEE Main Physics Test- 10 - Question 5
Change in linear momentum = Final
Momentum-Initial momentum.
Momentum = mass x velocity
Initial velocity = v
Since molecule returns back with same velocity, final velocity = -v
Initial momentum = mv
Final momentum = -mv
Change in linear momentum is = -mv-(mv)=-2mv 
JEE Main Physics Test- 10 - Question 6

Rate of diffusion is

JEE Main Physics Test- 10 - Question 7

Which one of the following is not a thermodynamical co-ordinate ?

JEE Main Physics Test- 10 - Question 8

The mean kinetic energy of a molecule of a gas at 300 K is 6.21 x 10-21 The root mean square velocity of a molecule of H2 gas at this temperature will be(R=8.3 J/mole K,N= 6.02 x 1023 /mole, mass of the
hydrogen moleucle = 2 x 1.67 x 10-27 Kg)

JEE Main Physics Test- 10 - Question 9

At what temperautre will the rms velocity of oxygen moleucle be sufficient, so as to escape from the earth ? Escape velocity from the earth is 11.0 km/s and the mass of 1 moleucle of oxygen 5.34 x 10-26 (Boltzman constant k =1.38 x 10-23 J/K)

JEE Main Physics Test- 10 - Question 10

The temperature of inside and outside of a refrigerator are 273 K and 303 K respectively.  Assuming that the regrigerator cycle is reverisble,for every joule of work done, the heat delivered to the surrounding will be nearly

Detailed Solution for JEE Main Physics Test- 10 - Question 10
JEE Main Physics Test- 10 - Question 11

A sample of gas expands from volume V1 to V2. The amount of work done by the gas is greatest, when the expansion is

Detailed Solution for JEE Main Physics Test- 10 - Question 11
While expanding the PV diagram shows drop in pressure for isothermal and even more in adiabatic process, but in isobaric process pressure remains constant ie parallel to V axis. the work done in P V diagram is area under PV curve between the limits of volumes. hence the area is maximum for isobaric then comes isothermal and adiabatic has the least work done for a given range of volumes.
JEE Main Physics Test- 10 - Question 12

During the adiabatic expansion of 2 moles of a gas the internal energy of a gas is found to decrease by 2 J. The work done during the process on gas will be equal to

Detailed Solution for JEE Main Physics Test- 10 - Question 12
In any adiabatic process heat is not given or taken out of system , so there will be adiabatic expansion it will be on expense of its own internal energy so we see decrease in internal energy by first law of thermodynamics that when heat is given to a system it either is used in doing work or increasing internal energy,  when no heat is given and system is expanding it has to spend it's own internal energy appearing as work done.
JEE Main Physics Test- 10 - Question 13

Magnitude of slope of an adiabatic curve is always

JEE Main Physics Test- 10 - Question 14

Air is filled in a bottle at atmoshperic pressure and it is cordked at 350C. If the cork can come out at 3 atmospheric pressure then upto what temperature should the bottle be heated in order to remove the cork?

Detailed Solution for JEE Main Physics Test- 10 - Question 14
P1 V1 / T1 = P2 V2 / T2
Volume is constant (bottle volume). So,
P1 / T1 = P2 / T2
1 / (273+35) = 3 / T2
So temperature to be heated is,
651 C.
At which bottle would have vaporized.
JEE Main Physics Test- 10 - Question 15

A perfect gas goes from state A to another state B by absorbing  8 x 105 J of heat and doing 6.5 x 105 J  of expernal work. It is now transfered between the same two states in another process in which it absorbs 105 J of heat. Then, in the second process

Detailed Solution for JEE Main Physics Test- 10 - Question 15
Now ΔQ=ΔW +ΔE

For first case, 8 x 10'5=6.5 x 10'5+ΔE

Therefore, ΔE=1.5 x 10'5 J

In the second case, ΔQ=10'5 J

Therefore ΔW=ΔQ-ΔE

=-0.5 x 10'5 so answer option A correct
JEE Main Physics Test- 10 - Question 16

If 150 J of heat is added to a system and the work done by the system is 110 J. Then, change in internal energy will be

Detailed Solution for JEE Main Physics Test- 10 - Question 16

JEE Main Physics Test- 10 - Question 17

An ideal refirgator has a freezer at a temperature of -130C. The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be

JEE Main Physics Test- 10 - Question 18

A Carnot reversible engine converts 1/6 of heat input work. When the temperature of the sink is reduced by 62 K, the efficiency of Carnot’s cycle becomes 1/3. The temperature of the source and sink will be

JEE Main Physics Test- 10 - Question 19

When a solid is converted into a gas,directly by heating then this process is known as

JEE Main Physics Test- 10 - Question 20

The latent heat of vapourization of water is 2240 J.If the work done in the process of vapourization of 1 g is 168 J, then increase in internal energy will be

*Answer can only contain numeric values
JEE Main Physics Test- 10 - Question 21

A vessel contains a mixture of 7 g nitrogen and 11 g of carbondioxide at temperature T = 290K. If the pressure of the mixture is 1 atm (1.01 × 105 N/m2). Calculate its density in kg/m3:-


*Answer can only contain numeric values
JEE Main Physics Test- 10 - Question 22

To form a composite 16 μF, 1000V capacitor from a supply of identical capacitors marked 8 μF, 250 V, we require a minimum number of capacitors.


*Answer can only contain numeric values
JEE Main Physics Test- 10 - Question 23

If the height of transmitting and receiving antenna are 32 m and 50 m respectively, then for line of sight (LOS) propagation maximum distance between both antenna is (If radius of earth = 6400 km) (in km) :-


*Answer can only contain numeric values
JEE Main Physics Test- 10 - Question 24

Figure, shows a circuit in which three identical diodes are used. Each diode has forward resistance of 20Ω and infinite backward resistance. Resistors R1 = R2 = R3 = 50 Ω. Battery voltage is 6V. Find the value of current in mA through R3?


Detailed Solution for JEE Main Physics Test- 10 - Question 24

Since D3 is reverse biased, there is not current through that branch

*Answer can only contain numeric values
JEE Main Physics Test- 10 - Question 25

A horizontal pipe has a cross section of 10 cm2 in one region and of 5 cm2 in another. The water velocity at the first is 5 ms–1 and the pressure in the second is 2 × 105 Nm–2. Find the pressure of water in 1st region (in N/m2).


Detailed Solution for JEE Main Physics Test- 10 - Question 25

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