Maximum value of f(x) = 3 cos x + 4 sin x  is:

In a charged conductor, where do the electrical charges tend to reside?

Which of the following quantities is a scalar?  

The refractive index of glass is 1.5. What is the speed of light in glass?

(Speed of light in vacuum is 3.0 ×10⁸ m s^-1)

Two capacitors of 6 µF and 3 µF are connected in series and a potential difference of 90 V is applied. The energy stored in the system is:

Find the resistance when a current of 2 A flows under a voltage of 10 V.  

What is the current flowing through a 24 Ω resistor connected to a 12 V battery?

Who laid the foundations of Quantum Theory?

A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves:

A plane mirror is placed on a wall. A man walks directly toward the mirror at 2 m/s. The speed at which his image approaches him is:

Compared to fresh Water, the freezing point of sea water is -