Physics

(a)  273 K                                 (b)  573 K (c)   373 K                                 (d)  473 K Answer-a (8)

(a) (T+2.4)K                        (b) (T-2.4)K (c)  (T+4)K        ...

(a)  Its pressure increases (b)  Its temperature falls (c)   Its density increases (d)  Its thermal energy increases Answer-b   (5)

Cp/Cv for the gas is (a)   3/2                           ...

(P1,V1,T1) to (P2,V2,T2) . Which of the following relation is correct (a) T1V1γ-1=T2V2γ-1               (b)...

(a) P‘=P                                (b) P‘=2P (c)...

  (a) 27.5°C                             (b) 75°K (c)  150K ...

(a) 627°C                               (b) 527°C (c) 427°C ...

  (a)  Adiabatic process             (b)  Isothermal process (c)   Isobaric process                (d)  Isochoric process Answer-a (4)

(a)  420K                                   (b) 327°C...

(a) -2767.23 J                       (b) 2767.23 J (c)  2500J     ...

(a)  Isochoric                            (b)  Isobaric (c)   Isothermal                         (d)  Adiabatic Answer-(d)          In adiabatic process, no transfer of heat takes place between system...

(a)  Zero                                    (b)  Infinite (c)   Finite but non-zero           (d)  Undefined Answer-a (10)

(a) 10°C                                  (b) 887°C...

(a)  dQ=0                                    (b)...

(a)  1280 J                                (b)  1610 J (c)   1815 J                                (d)  2025 J Answer-c (8)

T to T1 is (a) R(T-T1)                             ...

change is ( γ=Cp/Cv ) (a) PTγ  constant                  (b) PT-1+γ   constant (c)...

(a)  Isothermal curve slope = adiabatic curve slope (b)  Isothermal curve slope =γ×  adiabatic curve slope (c)   Adiabatic curve slope...

(Pi,Vi,Ti) to its final state (Pf,Vf,Tf) . The decrease in the internal energy associated with this expansion is equal to...

(a)  Isothermal change           (b)  Adiabatic change (c)   Isobaric change                (d)  Isochoric change Answer-b (10)

(a)  227.36 K                            (b)  500.30 K (c)   454.76 K                            (d) -47°C Answer-a   (6)

(γ=Cp/Cv) (a)  PγV = constant               (b)TγV  = constant (c)  TVγ-1  =constant              (d) TVγ   = constant Answer-c (7)

P0 , its new pressure will be (a) 8P0            (b) 16P0 (c) 6P0     ...

(a)  P                                         (b) 2P (c)  P/2                             ...

(a) Starts becoming hotter (b) Remains at the same temperature (c) Starts becoming cooler (d) May become hotter or cooler...

(a)  2077.5 joules                    (b)  207.5 joules (c)   207.5 ergs                         (d)  None of the above Answer-a (20)

(a)  No energy is required for expansion (b)  Energy is required and it comes from the wall of the container...

(a)  The pressure decreases (b)  The pressure increases (c)   The pressure remains the same (d)  The pressure may increase or...

(a)  1/γ                                   (b) γ...

(a)  1×105 N/m2                  (b) 1×10-8 N/m2 (c) 1.4 N/m2      ...

(a)  1 J                                       (b)   -1  J (c)   2 J                                       (d)  – 2 J Answer-d (5)

(a) 24/5 (b)  8 (c)  40/3 (d)  32 times its initial pressure Answer-d (8)

1.5×104 J . During this process about (a) 3.6×103  cal  of heat flowed out from the gas (b) 3.6×103   cal...

(a)  For an isothermal change PV = constant (b)  In an isothermal process the change in internal energy must be...

(a)  450 K                                 (b)  375 K (c)   225 K                                 (d)  405 K Answer-b (6)