mantle

heliostats

diffusers

ponds

diffuse radiations only

direct radiation only

both direct and diffuse radiations

none of the above

50 to 100 Degree C

100 to 150 Degree C

150 to 200 Degree C

200 to 300 Degree C and above

temperature of about 90 Degree C with an efficiency of 30 to 35%

temperature of about 120 Degree C with an efficiency of 45%

temperature of about 150 Degree C with an efficiency of 52%

none of the above

protect the collector from dust

reduce the heat losses from collector beneath to atmosphere

transmit solar radiation only

all of the above