Which one of the following statements is NOT true?
Friction makes a moving object slow down and stop
Friction between two surfaces will make them hot
Friction also enables an object to stay in a stationary position
Friction decreases if roughness of an object increases
The capacity to do work is called
force
energy
machine
movement
Electrical energy can be produced by
coal
water
uranium
all of the above
Which one of the following energies can be replenished?
Solar energy
Wind energy
Water energy
All of the above
Radha pushed a wall but failed to move it then
energy is not spent but work is done
energy is spent but work is not done
energy is not spent and work is not done
energy is spent and work is done
An electrical heater converts
heat energy to electrical energy
electrical energy to heat energy
light energy to electrical energy
electrical energy to muscular energy
Which energy conversion takes place during photosynthesis?
Heat energy to Light energy
Light energy to Heat energy
Light energy to Chemical energy
Heat energy to Chemical energy
The force which pulls a body towards the earth is called
friction
gravity
tension
collision
In the battery cell, the energy is stored in the form of
electrical energy
muscular energy
chemical energy
solar energy
In which one of the following activities is force used for pulling?
Blowing air into a balloon
Cycling
Stretching a rubber band
None of these
