Hi Mohan,

You can simply create an XML record for a webpage:

<?xml version="1.0" encoding="utf-8"?>
  <odoo>
    <data>
      <!-- webpage record -->
      <template id="new_web_page" name="Your page name" page="True">
        <t t-call="website.layout">
          <div id="wrap" class="oe_structure oe_empty">
            <!-- Your content here -->
          </div>
        </t>
      </template>
    </data>
  </odoo>
</xml>

You then also need a controller to call this webpage, which looks like this:

# -*- coding: utf-8 -*-
import odoo.http as http

class your_class(http.Controller):
     @http.route('/custom/url', type='http', auth='user', website=True)
     def show_custom_webpage(self, **kw):
          return http.request.render('your_module.new_web_page', {})

In this example you would have a new page under http://your-odoo.com/custom/url.
For more information look at https://www.odoo.com/documentation/10.0/howtos/website.html

Regards,

Yenthe