A particle moves in a circle with O as centre and AO = OB = 5 cm, as radius It starts from A. Calculate:
(i) the distance covered; and
(ii) the displacement, when it reaches B.
i) The distance covered,
(ii) The displacement = 2 × OB = 2 × 5 = 10 cm, along AB.
What is the physical state of water at
a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
Give two reasons to justify
Water at room temperature is a liquid.
Give two reasons to justify
An iron almirah is a solid at room temperature.
Why is ice at 273K more effective in cooling than water at the same temperature ?
What produces more severe burns, boiling water or steam ?
8. Name A, B, C, D, E and F in the following diagram showing state change :
Both boiling and evaporation convert a liquid into vapour. What is the difference between the two process
Define Evaporation
Mock Test Series
