Physics
Practice Physics MCQs from the Science syllabus.
A body of mass 10 kg is falling freely. What is the force acting on it? (take g=9.8 m/s^2)
What is the pressure exerted by a 500 N force acting on an area of 2 m^2?
Which of the following determines whether an object will sink or float in a liquid?
An object is thrown upwards. At the highest point, its velocity is:
If the mass of the Earth is M and its radius is R, the acceleration due to gravity g is:
A piece of iron sinks in water but a huge ship made of iron floats. This is because:
Calculate the pressure exerted at the bottom of a water tank of depth 10m. (density of water = 1000 kg/m^3, g = 10 m/s^2)
Two planets have the same mass, but the radius of planet A is twice that of planet B. The ratio of g_A to g_B is:
A body feels weightless in a satellite orbiting the Earth because:
If the Earth's radius shrinks by 1% while its mass remains constant, the value of 'g' on its surface would:
In a hydraulic machine, the area of the smaller piston is 0.01 m^2 and the larger piston is 1 m^2. If 10 N force is applied to the small piston, the force on the large piston is:
The weight of an object on the surface of Earth is 98 N. What is its mass? (g = 9.8 m/s^2)
What is the effect on upthrust if the density of the liquid increases?
A stone is dropped from a height. After 2 seconds, its velocity will be: (g = 9.8 m/s^2)