51. The temperature of a body is an indicator of

1. 1. The total energy of the molecules of the body

   
   
   

   2. The average energy of the molecules of the body

   
   
   

   3. The total velocity of the molecules of the body

   
   
   

   4. The average kinetic energy of the molecules of the body

   
   
   

---

1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: D

   N/A

---

52. Two bodies A and B are of same mass and same amount of heat is given to both of them.
    If the temperature of A increases more than that of B because of heat addition, then.

1. 1. The specific heat capacity of A is more than that of B

   
   
   

   2. The specific heat capacity of A is less than that of B

   
   
   

   3. Both A and B have the same specific heat capacity but A has greater thermal conductivity

   
   
   

   4. Both A and B have the same specific heat capacity but B has greater thermal conductivity

   
   
   

---

1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: B

   N/A

---

---

53. Which one of the following statements is correct. Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of

1. 1. Convection only

   
   
   

   2. Conduction and convection only

   
   
   

   3. Radiation and convection only

   
   
   

   4. Convection, conduction and radiation

   
   
   

---

1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

---

54. The specific heat of a gas at constant pressure is greater than the specific heat at constant volume because

1. 1. Work is done in the expansion of the gas at constant pressure

   
   
   

   2. Work is done in the expansion of the gas at constant volume

   
   
   

   3. The attraction between the molecules increases at constant pressure

   
   
   

   4. The molecular collision increases at constant pressure

   
   
   

---

1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: A

   N/A

---

---

55. Pressure exerted by gas is

1. 1. Independent of the density of the gas

   
   
   

   2. Inversely proportional to the density of the gas

   
   
   

   3. Directly proportional to the density of the gas

   
   
   

   4. Directly proportional to the square of the density of the gas

   
   
   

---

1. View Hint View Answer Discuss in Forum

   N/A

   Correct Option: C

   N/A

---