ion spring is a special type of torsion spring. <br/> 
              <input id="q2" name="q2" type="radio" value="1"/> 
                <font color="green"> True </font> <br/> 
              <input id="q2" name="q2" type="radio" value="0"/>
                <font color="red"> False </font> <br/><br/> 
              
              <b>Q3.</b> 
               What do you mean by deflection?  <br/><br/> 
              
              <b>Q4.</b> 
              What are the types of springs?    <br/><br/> 
        