Explain the following `(AS _(1))`
(a) Static Inertia
(ii) Inertia of motion
(c ) momentum
(d) impulse (e) impulsive force

Explain the following : (a) Role of Na^(+) in the gneration of action potential. (b) Mechanism of generation of light- induced inpulse in the retina . (c ) Mechanism through which a sound produces a nerve impulse in the inner ear .

Explain the concept of inertia write two examples each inertia of motion inertia of rest and inertia of direction

Draw a neat labelled diagram of the following (a) Brain (b) Structure of Spinal Cord (c ) Nerve impulse transmission

Explain the following processes: (a) Polarisation of the membrane of a nerve fibre. (b) Depolaristion of the membrance of a nerve fibre. (c ) Conduction of nerver impulse along a nerve fibre. (d) Transmission of a nerve impulse across a chemical synapse.

Observe the figure and answer the following questions. (i) Label (A) to (D) (ii) What process is shown in the diagram ? (iii) Explain the process

Which of the following is the greates? cos e c1 (b) cos e c2 cos e c4 (d) cos e c(-6)

Differentiate the following : y= (e^(3x))/(1 + e^(x))

Two identical billiard balls strike a rigid wall with the same speed but at different angles, and get reflected without any change in speed, as shown in Fig. 5.6. What is (i) the direction of the force on the wall due to each ball? (ii) the ratio of the magnitudes of impulses imparted to the balls by the wall ?