A PMMC instrument produces a deflection of 90° when a current 2 mA passes through its moving coil. The instrument is spring controlled. Supposing the instrument is redesigned with its spring constant as before, and its permanent magnet is replaced with a new permanent magnet which reduces twice the flux density as before, what would be the deflection if a current of 1 mA is passed through the coil? The other features of the PMMC instrument remain the same.