A stone of mass m kg is held h meters above the floor for 50s. The work done in joules over this period is

What precaution should a manufacturer take to ensure that energy loss in a transformer is minimized?

A force of 5N act at a point Y on a rod XYZ as shown in the diagram above, if XY is 2m. What is the moment of the force about point X?

A substance has a half of 3mins. after 6mins. the count rate was observed to be 400. What was its count rate at zero time?

What is the average velocity of the sprinter whose velocity time graph is as shown above

Which of the following is most suitable for protecting the circuit of 2000W electric iron connected to a 250V mains?

Two horizontal forces, 10N and 8N and another force F1 inclined at 30 to the vertical acting as shown in the diagram above, keep the body P in equilibrium, T...

The photocell works on the principle of the

What is the reading of the vernier scale above?