Question : A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum:

Option 1: just after it is dropped 

Option 2: when it is just on the half-way

Option 3: just before it touches the ground

Option 4: when it touches the ground

Question : Which of the statements is not correct regarding energy?

Option 1: The energy possessed by a body due to its change in position or shape is called potential energy.

Option 2: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.

Option 3: The gravitational potential energy of an object of mass, M raised through a height, H from the Earth's surface is given by MgH.

Option 4: An object in motion possesses what is known as the kinetic energy of the object.

Question : Direct conversion of solar energy with the use of a photo voltaic cell results in the production of

Option 1: Optical energy

Option 2: Electrical energy

Option 3: Thermal energy

Option 4: Mechanial energy

Question : The green plants in a terrestrial ecosystem capture about ______ per cent of the energy of sunlight that falls on their leaves and convert it into food energy.

Option 1: 20

Option 2: 10

Option 3: 1

Option 4: 5

Question : The energy that can harness heat stored below the earth's surface is known as:

Option 1: thermal energy

Option 2: nuclear energy

Option 3: tidal energy

Option 4: geothermal energy

Question : According to the Ministry of Power, Government of India, which is the largest energy source of India? (as of March 2023)

Option 1: Hydro power

Option 2: Tidal energy

Option 3: Coal

Option 4: Solar energy