Step 1: Concept of asset valuation.
  
Fixed assets are tangible long-term assets like machinery, building, etc. They are recorded at historical cost.  
Step 2: Treatment in financial statements.
  
As per accounting principles and Companies Act, fixed assets are shown at cost price less accumulated depreciation.  
Step 3: Eliminate wrong options.
  
- (A) Par value: Applies to shares, not fixed assets. 
  
- (C) At cost price: Incorrect, depreciation must be deducted. 
  
- (D) At realisable value: Incorrect, as only impairment may affect valuation, not general realisation.  
Step 4: Conclude.
  
Thus, fixed assets are shown at cost price less depreciation.  
  
 
Final Answer:  
\[
\boxed{\text{At cost price less depreciation}}
\]