Please help me with the c) part🙏 i) At which end must this mass be suspended.
ii) What is the mass of the rule.
b) State and define Sl unit of power. How is it related to horse power ?
c) A block and tackle system of 5 pulleys is used to raise a load of SOON
steadily through a height of 20 m. The work done against friction is 2000 J.
Calculate
i) work done by effort.
ii) efficiency of system.
iii) displacement of effort applied.
iv) M.A. and v.R.
Can a concave lens form an image of size two times that of the object ?
Why ? Show diagrammatically.
In the given diagram alongside,
:omplete the path of the light ray
Tt emerges out of the prism.
n your diagram mark the angles
"herever necessary. Name the
Jhenomenon which takes place
