Phosphorescent material

Germanium

Silicon

Gallium arsenide

due to interia of rest, road is left behind and man reaches forward

due to inertia of motion upper part of body continues to be in motion in forward direction

he leans forward as a matter of habbit

of the combined effect of all the three factors state in (A), (B), (C)

maximum at the centre and minimum near the walls

minimum at the centre and maximum near the walls

zero at the centre and maximum near the walls

maximum at the centre and zero near the walls

Sri Lanka

India

Australia

Pakistan

36 sec

45 sec

27 sec

32 sec