The issue price of a single debenture is:
\[
\text{Issue price} = \rupee100 + \rupee10 (\text{premium}) = \rupee110.
\]
The redemption price of a single debenture is:
\[
\text{Redemption price} = \rupee100 + \rupee10 (\text{premium}) = \rupee110.
\]
The loss on issue of debentures is calculated as:
\[
\text{Loss} = \text{Redemption premium} - \text{Issue premium}.
\]
For 10,000 debentures:
\[
\text{Loss} = (\rupee10 \times 10,000) = \rupee1,00,000.
\]
Thus, the loss on issue of debentures is \rupee1,00,000.