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:
\[
\boxed{\text{At cost price less depreciation}}
\]