A tester is used to check the conduction of electricity through two liquids, labelled A and B. It is found that the bulb of the tester

(i) Total numbers of bulbs = 20 Numbers of defective bulbs = 4 Probability of getting a defective bulb = 4/20 = 1/5 (ii) One non defective bulb is drawn in (i) then...

Correct Answer is: (d)  Sound is transmitted by particles (atoms or molecules) in a solid, liquid or gas colliding with each other. It is a wave which is created by vibrating...

(a) Most liquids that conduct electricity are solutions of acids, bases and salts.  (b) The passage of an electric current through a solution causes chemical effects.  (c) If you pass current through...

Sea water contains more dissolved salts than the drinking water. Hence, it is more conducting than the drinking water. Because of this reason, the compass needle deflects more in seawater...

The resistance of 60watt bulb is greater than the resistance of 100watt bulb.

Since the object allows current to flow and completes the circuit and makes bulb to glow. It means the object is a conductor of electricity.

(b) the thin filament.

The resistance of the bulb is given by R=(V2/P). So, the resistance of 60 W bulb is more than the resistance of 100 W bulb. When they are connected in...

The resistance of the bulb is given by R =v2/ P. So, the resistance of 60 W bulb is more than the resistance of 100 W bulb. When they are connected...

(c) Red bulb and a blue bulb of equal power in a given time nr > nb.