JEE Main Physics question

10000 small balls, each weighing 1 g, strike one square centimetre of area per second with a velocity of 100 ms⁻¹ in a normal direction and rebound with the same velocity. The pressure on the surface will be [BITSAT 2007]

• (A)2×10³ Nm⁻²
• (B)2×10⁵ Nm⁻²
• (C)10⁷ Nm⁻²
• (D)2×10⁷ Nm⁻²Correct