Which of the following statements is true regarding the

What is the work done when a force of 10 N moves an object by 5 m in the direction of the force?  

Sensitivity of the human eye is maximum in the –

Smog is a combination of –

Charges +q and –q are placed at (–d, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?

The focal length of a concave mirror is 20 cm. Where should an object be placed to get an image of the same size?

The term ‘Isoneph' indicates the lines of equal –

Which of the following materials behaves as a dielectric?

Bernoulli's Principle is derived from which fundamental law?

Which of the following particles in motion, having the same kinetic energy, has the shortest wavelength?