A human liver cell measures 20μm in diameter. This is equivalent to:
A force of 10.5 N is applied at the end of a circular disc pivoted at center. The diameter of the disc is 0.5 m, calculate the amount of torque generated due to this acting force.
A black body is at a temperature of 2880 K. The energy of radiation emitted by this object with wave length between 250 nm to 255 nm is U1, between 500 nm to 505 nm is U2and between 1500 nm to 1505 nm is U3. Then for this situation mark the correct statement