Can you give any two axioms from your daily life.

Give two daily life situation where you observe the diffusion (AS_1)

(i) What do you mean by resonance ? (ii) Mention any two uses of its from your daily life.

Have you ever observed any water pollution in your area? What measures would you suggest to control it?

Can you say that salt is a liquid on the basis of change in its shape? Justify your answer. Take a sponge. Observe its shape.

Using Pascal's law, explain with a neat figure, the working of a hydraulic lift. Mention any one situation from your daily life where hydrostatic paradox is useful.

You are observing top of your school building at an angle of elevation a from a point which is at d meter distance from foot of the building Which trigonometric ratio would you like to consider to find the height of the building?

Mendel studied inheritance of seven pairs of traits in pea which can have 21 possible combinations. If you are told that in one of these combinations, independent assortment is not observed in later studies, your reaction will be

Do you observe any soil pollution in your neighbourhood? What efforts will you make for controlling the soil pollution?

Reaction time : When a situation demands our immediate action, it takes some time before we really respond. Reaction time is the time a person takes to observe, think and act. For example, if a person is driving and suddenly a boy appears on the road, then the time elapsed before he slams the brakes of the car is the reaction time. Reaction time depends on complexity of the situation and on an individual. You can measure your reaction time by a simple experiment. Take a ruler and ask your friend to drop it vertically through the gap between your thumb and forefinger (Fig.). After you catch it, find the distance d travelled by the ruler. In a particular case, d was found to be 21.0 cm. Estimate reaction time.