Questions
How much work can be obtained from 100 calories of heat energy?
detailed solution
Correct option is B
1 calorie = 4.2J∴Work done = heat obtained in calories × 4.2Jor W = 100 × 4.2 = 420 JSimilar Questions
A metal block of density 5000 kg/m3 and mass 2 kg is suspended by a spring of force constant 200 N/m. The spring block system is submerged in a water vessel. Total mass of water in it is 300 g and in equilibrium the block is at a height 40 cm above the bottom of vessel. If the support is broken. Find the rise in temperature of water (in oC). Specific heat of the initial of block is 250 J/kg K and that of water is 4200 J/kg K. Neglect the heat capacities of the vessel and the spring.
Get your all doubts cleared from
Sri Chaitanya experts
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests