A biconcave lens perpendicular to the principal axis. A ray labeled A parallels the principal axis. When it intersects with the lens, a ray labeled B bends upward and a ray C continues parallel to the principal axis. Another ray labeled D is angled toward the principal axis. When it intersects with the lens, a ray labeled E continues parallel to the principal axis, and a ray labeled F intersects with the principal axis. Which arrow represents the refracted arrow of incident ray A? Which arrow represents the refracted arrow of incident ray D?

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

6/12=1/2

step-by-step explanation:

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.