Give scientific reasons :
We cannot clearly see an object kept at a distance less than 25 cm from the eye .

Give scientific reasons: We can feel the heat of a table lamp, under it.

Give scientific reasons: Sodium is always kept in kerosene

Give scientific reasons Chandra telescope cannot be based on the earth.

Give Scientific reason: Sodium metal is kept in kerosene

Give scientific reasons: We feel tired when we do exercise.

Give scientific reasons: Coke produces more heat than coal.

Give scientific reasons: If we bring an object closer than 25 cm from the eyes, why can we not see it clearly even though it subtends a bigger angle at the eye?

Give scientific reasons Why cannot we hear the echo produced in a classroom?

Give scientific reasons : You cannot enjoy watching a movie from a very short distance from the screen in a cinema hall .