Temperature difference of C is maintained between two ends of a uniform rod AB of length 2L. Another bent rod PQ, of same cross-section as AB and length is connected across AB (See figure). In steady state, temperature difference between P and Q will be close to :
A rod of length 50cm is provided at one end. It is raised such that if makes an angle of from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal ( in rad s-1) will be (g = 10ms-2)
A particle having the same charge as of electron moves in a circular path of radius 0.5cm under the influence of a magnetic field of 0.5T. If an electric field of 100V/m makes it to move in a straight path, then the mass of the particle is (Given charge of electron = 1.6 X 10-19C)
The pitch and the number of divisions, on the circular scale, for a given screw gauge are 0.5mm and 100 respectively. When the scew gauge is fully tightened without any object, the zero of its circular scale lies 3 divisions below the mean line.
The readings of the main scale and the circular scale, for a thin sheet, are 5.5mm and 48 respectively, the trhickness of this sheet is: