(A) increase

(B) decrease

(C) remains the same

(D) first, decrease then increase

(A) their masses

(B) their heat

(C) their temperature

(D) whether they are in solid, liquid, or gaseous state

A) an electric field is used

B) a magnetic field is used

C) both electric and magnetic fields are used

D) none of the above

(A) force and pressure

(B) work and energy

(C) impulse and momentum

(D)  weight and force

(A) reverberate

(B) be heard by us faintly

(C) be heard up to 10 km from it

(D) not be heard at any distance at all from it

(A) darkness

(B) red light

(C) white light

(D) yellow light

(A) 50 dioptre

(B) 1 dioptre

(C)  10 dioptre

(D) 2 dioptre

(A) capillary action phenomenon

(B) diffusion of ink through the blotting

(C) siphon action

(D) viscosity of ink

(A) storm

(B) rainfall

(C) snow

(D) intense

(A) piezo-electric effect

(B) Edison effect

(C) photoelectric effect

(D) johnson effect