Hot water is added to three times its mass of water at 10oC and the resultant temperature is 20oC. What is the initial temperature of the hot water?

In the figure above, M and N are insulated metal spheres in contact. A negatively charged ebonite rod P is I brought near M. When M and N are Separated and t...

Which of the following statements is TRUE of photoelectric effect?

The fig above shows two connected bodies of masses M1 and M2 in equilibrium under gravity. The tension in the upper string is

In the above, a voltage V is applied across the terminals P and Q. The voltage across the 1 ohm resistor is

What type of reaction is represented by the following scheme? \[ {}^{2}_{1}X + {}^{2}_{1}Y + {}^{3}_{2}Z + {}^{1}_{0}n + \text{energy} \]

The velocity time graph above describes the motion of a particle between two points P and Q. What is the distance between P and Q?

Isotopes are nuclei which have

A 50kg block is dropped from a point 10cm above as shown in the fig above. if the force constant of the spring is 4.0 x 104Nm-1, find the maximum compression...