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The size of an air bubble rising up in water ______.
Concept: undefined >> undefined
State whether true or false. If false, correct the statement.
The shape of an object helps to determine whether the object will float or not
Concept: undefined >> undefined
State whether true or false. If false, correct the statement.
The reason for brilliance of diamonds is total internal reflection of light.
Concept: undefined >> undefined
State the direction of incident ray which after reflection from a spherical mirror retraces its path. Give reason for your answer.
Concept: undefined >> undefined
Higher Order Thinking Skills.
When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?
Concept: undefined >> undefined
During day time, air blows from ______ to ______.
Concept: undefined >> undefined
You and your friend are on the moon. Will you be able to hear any sound produced by your friend?
Concept: undefined >> undefined
Who proposed the heliocentric model of the universe?
Concept: undefined >> undefined
State true or false. If false, correct the statement.
In an atom, electrons revolve around the nucleus in fixed orbits.
Concept: undefined >> undefined
How was it shown that atom has empty space?
Concept: undefined >> undefined
What conclusions were made from the observations of Gold foil experiment?
Concept: undefined >> undefined
Acids turn blue litmus paper to ______.
Concept: undefined >> undefined
