JEE Advanced Mi...

For the given setup, which statement is correct? Assuming there is no friction.

A horizontal force F is applied at the top of a square block with mass m. What is the minimum coefficient of friction needed to topple the block before it starts to slide?

You (with a mass of 55 kg) are sitting in the back seat of a car. The car is initially moving at 20 km/hr and the driver applies the brakes to stop the car in 0.2 seconds. A monkey suddenly jumps in front of the car. Assuming there is no damage or sliding of the car, which of the following will happen to you?

The energy radiated by a sphere of radius 0.2 m and surface temperature 800 K is E. Then the energy radiated by the sphere of radius 0.8 m and surface temperature 400 K is:

Addition of which of the following species in 1 M KI solution will cause a change in the vapor pressure of the solution?

Choose the correct answer from the options given below:

For the following reaction : 

N₂(g) + 3H₂(g) ⇋ 2NH₃(g)

The free energy changes at 25°C and 35°C are -33.089 and -28.018 kJ respectively. The heat of the reaction is

Let O (0,0), P(3,4), Q(6,0) be the vertices of the triangle OPQ. The point R inside the triangle OPQ is such that the triangles OPR,PQR,OQR are of equal area. The co-ordinates of R are.