It moves towards the point being heated √

- Wire expands and sags √

Arrangement b, vertical ; because the convection currents can flow more freely ;

Make the handle to be longer ;

Moment due to the force will increase;

As water flow is at a high speed.

- Pressure between the ball and water stream √ decreases

- Atmosphere pressure pushes the ball towards the water √

This is due to inertia only the one that the force acts on will move.√

Elasticity √

Pressure increases on squeezing, forcing more water into the test tube. High pressure above the test tube and more water exceed upthrust and sink. √

I, -Bombardment of particles with particles of air. √

A – Eye piece lens. √

B – Objective lens. √

ii. a converging lens to form light into the cell √

iii. it would remain still. The number of particles lifting one side will be equals to those lifting the opposite side and hence the resultant force equals zero.

A) i. Naphthalene cools rapidly and then stops at 560 c √

- For 1 minutes naphthalene solidify at constant temperature √

- cooling continuous up to room temperature √

ii) Total heat lost by naphthalene

b. – Conductictivily of aluminium can √

- Temperature of the surrounding air √

- Surface area of aluminium can. √

c. rise in temperature increase K.E of particles √

- They hit the wall of container with a high frequency √

- Since volume does not increase, it leads to high pressure. √

a) W = fluid reservoir √

X = release value √

b.) Effort applied produces high liquid pressure below pump piston. √

- This keeps value A closed due to less atmospheric pressure while value

B opens and liquid flows, raises the ram piston and lift the load. √

c.) To ensure that during upstroke, atmospheric pressure forces value A to open to allow the oil into B.√

d.) Increasing the cross sectional area of Q √

- reducing cross sectional area of P. √

e.) If force p is F1

a) Angular displacement is the angle ( in radians ) through which a body has been rotated in a specified direction about a given axis √

b.) As masses M rotates with increasing angular velocity, the vertical angle Q increases, The collar is pulled up and turns lever 1 clockwise √ lever pushes liver 2 to move anti-clockwise,

Which pulls the fuel control value shut at the specified speed; when the speed is lowered as a result of no fuel, the spring reopens the value√