HARD
Earn 100

What is solar constant and its importance?

Important Questions on Energy Production

EASY
The solar constant on the surface of the earth is S. What will be its value on the surface of another planet which is about 5.3 AU away from sun?
EASY
What is the major role of a Greenhouse gas that contributes to temperature rise of the earth's surface?
EASY

The sun rays are allowed to fall on a lens of diameter 20 cm. They are then brought to focus on a calorimeter containing 20 g of ice. If the absorption by the lens is negligible, the time required to melt all the ice is

(Solar constant =1.9 cal min-1 cm-2 and L=80 cal g-1)

EASY
Which of the following gas is believed to cause temperature rise in the atmosphere?
MEDIUM
The earth receives radiation from the sun at the rate of 1400 watt/m2 The distance from the centre of the sun to the surface of the earth is 1.5×1011 m and the radius of the sun is 7.0×108 m. Treating the sun as a black body the temperature of the sun will be- (Stefan-Boltzmann constant, σ=5.67×10-8 W m-2 K4)
EASY
Solar constant for earth is 2 Cal min1 cm2. If the distance of mercury from sun is 0.4 times the distance of earth from sun, then solar constant for mercury will be:
EASY
The alternative idea that the children generally have related to greenhouse effect is that _____.
EASY
Carbon monoxide, emitted by automobiles, prevents transport of oxygen in the body due to _____.
MEDIUM
Each minute earth receives about 2 cal of heat energy per square centimetre from the sun. This is called the solar constant S. The value of solar constant in S.I units is
EASY
Which is the main atmospheric gas responsible for the Greenhouse Effect?
EASY
The Greenhouse effect which is causing an increase in the atmospheric temperature is mainly due to:
EASY
Which of the following is responsible for global warming?
EASY
The gases present in atmosphere that cause Greenhouse effect are _____.
EASY
Which of the following is not a 'greenhouse gas'?
EASY
Which of the following is/are greenhouse gas/gases?