Physics Questions

Q:

Frictional force acts in 

A) the same direction as the motion B) the opposite direction of the motion
C) all the directions D) upward direction
 
Answer & Explanation Answer: B) the opposite direction of the motion

Explanation:

It is to overcome this opposite frictional force , that  we have to apply the needed force to make the body move

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Q:

Which statement best describes an igneous intrusion?

A) Igneous intrusion for when ice crystals splash into lava B) Magma is injected into surrounding rock forming an igneous intrusive
C) Magma is exported to an open area and forms iron D) Magma explodes to the surface and forms a smooth outer layer of rock
 
Answer & Explanation Answer: B) Magma is injected into surrounding rock forming an igneous intrusive

Explanation:

Magma is injected into surrounding rock forming an igneous intrusive.

 

Actually it is a plutonic formation in which magma present beneath Earth surface deforms the shape of rocks present above it
 

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Q:

The size of gear is usually specified by

A) pitch circle diameter B) diametral pitch
C) pressure angle D) circular pitch
 
Answer & Explanation Answer: A) pitch circle diameter

Explanation:

The size of gear is usually specified by pitch circle diameter.

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Q:

A body given with an initial velocity moved under the effect of gravity is called?

Answer

Projectile

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Q:

Heat is associated with

A) K.E of random motion of molecules B) K.E of orderly motion of molecules
C) Total K.E of random and orderly motion of molecules D) None of these
 
Answer & Explanation Answer: A) K.E of random motion of molecules

Explanation:
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Q:

If the speed of an object moving along a straight line keeps changing, its motion is said to be _________.

A) Uniform B) Periodic
C) Circular D) Non-uniform
 
Answer & Explanation Answer: D) Non-uniform

Explanation:
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Q:

Force of impact is the force

A) by the objects weight B) by the speed of the object
C) when the objects meet D) None of the above
 
Answer & Explanation Answer: C) when the objects meet

Explanation:

Force of impact is the force when the objects meet. The speed of the object plays an important role in the generation of force of impact. The laws of physics determine that the force of impact increases with the square of the increase in speed.

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Q:

A voltaic cell converts chemical energy to

A) Heat energy B) Electrical energy
C) Mechanical energy D) Light energy
 
Answer & Explanation Answer: B) Electrical energy

Explanation:

A galvanic cell is also known as voltaic cell provides electrical energy from the chemical energy.

 

a_voltaic_cell_converts_chemical_energy_to1558088421.png image

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