Question : Flywheel is an important part of a steam engine because it?

Option 1: accelerates the speed of the engine

Option 2: helps the engine in keeping the speed uniform

Option 3: decreases the moment of inertia

Option 4: gives strength to the engine

Question : Which of the following is correct about uniform acceleration?

Option 1: An object moving on a frictionless surface can gain uniform acceleration.

Option 2: An object in free fall is an example of uniform acceleration.

Option 3: An object moving with constant speed is an example of uniform acceleration.

Option 4: The motion of a spring is an example of uniform acceleration.

Question : Burns caused by steam are much severe than those caused by boiling water because

Option 1: Steam pierces through the pores of body quickly

Option 2: Steam has latent heat

Option 3: Steam is gas and engulfs the body quickly

Option 4: Temperature of steam is higher

Question : Which of the following was invented by Sir Humphry Davy?

Option 1: Safety pin

Option 2: Steam engine

Option 3: Safety lamp

Option 4: X-rays

Question : Identify the correct statement about inertia.

Option 1: Greater the mass, greater the inertia

Option 2: The lesser the weight, the greater the inertia

Option 3: The lesser the mass, the greater the inertia

Option 4: The greater the mass, the lesser the inertia

Question : The apparent weight of a man in a lift is less the real weight when:

Option 1: when the lift is going up with an acceleration

Option 2: the lift is going down with uniform speed

Option 3: The lift is going up with uniform speed

Option 4: the lift is going down with an acceleration