91. The mass defect per nucleon is called

1. 1. Binding energy

   
   
   

   2. Packing fraction

   
   
   

   3. Ionization energy

   
   
   

   4. Excitation energy

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

92. The main source of solar energy is

1. 1. Nuclear fission

   
   
   

   2. Nuclear fusion

   
   
   

   3. Combustion

   
   
   

   4. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

---

93. Neutron was discovered by

1. 1. J.J. Thomson

   
   
   

   2. James Chadwick

   
   
   

   3. Rutherford

   
   
   

   4. none of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

94. The important conclusion given by Millikan's experiment about the charge is

1. 1. Charge is never quantized

   
   
   

   2. Charges has no definite value

   
   
   

   3. Charge is quantized

   
   
   

   4. Charge on oil drop always increases

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

95. Voltage applied between the electrodes of discharge tube is of the nature

1. 1. 220 V alternating voltage

   
   
   

   2. 220 V DC voltage

   
   
   

   3. Variable voltage

   
   
   

   4. Voltage obtained by induction coil

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---