A motor pump lifts 200 kg of water per minute to a height of 15 m. Power (g=10) is MCQ with Answer and Explanation

Explanation:
At C (centre of curvature), image is at C, real, inverted, same size. At F, image at infinity. Beyond C, between F and C, diminished. Object between F and C gives beyond C, enlarged.

Explanation:
Rocket propulsion: momentum of exhaust gases equals momentum gained by rocket.

Explanation:
Height = 30×0.15=4.5 m. Work = 50×10×4.5=2250 J. Power=2250/10=225 W.