Why can you not keep your palm above a burning candle but you can keep it on the sides of a candle flame? Open Answer »
Why can you not use a clinical thermometer to measure the temperature of a candle flame? Open Answer »
Why does mercury not fall or rise in a clinical thermometer when taken out of the mouth? Open Answer »
Look at figures given below. The length of wire PQ in case of A is equal to the diameter of the semicircle formed by the wire CDE, in case B. One pin is attached to each wire with the help of wax as shown in figure above. Which pin will fall first? Explain. Open Answer »
The length of wire PQ in case of A is equal to the diameter of the semicircle formed by the wire CDE, in case B. One pin is attached to each wire with the help of wax as shown in figure above. Which pin will fall first? Explain.