Rohit wants to have an erect image of an object, using a converging mirror of focal length 40cm.
i. specify the range of distance where the object can be placed in front of
mirror. give reason for your answer.
ii. will the image be bigger or smaller than the object?

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s