A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt, the latent heat required
Are the same for both
Is greater for the ball
Is greater for the spring
For the two may or may not be the same depending upon the metal
On a hot day, placing a cup full of ice water on the table heats up as cup of hot tea on the same table cools down. write the reason.
Latent heat of $1\,gm $ of steam is $536 \,cal/gm,$ then its value in $joule/kg$ is
What is called change of state of matter ?
A solid material is supplied with heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does slope $DE$ represent.
During summers in India, one of the common practice to keep cool is to make ice balls of crushed ice, dip it in flavoured sugar syrup and sip it. For this a stick is inserted into crushed ice and is squeezed in the palm to make it into the ball. Equivalently in winter, in those areas where it snows, people make snow balls and throw around. Explain the formation of ball out of crushed ice or snow in the light of $p\to T$ diagram of water.