GK - Physics
21.
Out of the following pairs, which one does not have identical dimension?
Answer
Answer :
Option A22.
Fat can be separated from milk in a cream separator because of
Answer
A separator is a high-speed centrifuge that acts on the principle that cream or butterfat is lighter than other components in milk.Fat can be separated from milk in a cream separator because of Centrifugal forces.
Answer :
Option DExplanation :
A separator is a high-speed centrifuge that acts on the principle that cream or butterfat is lighter than other components in milk.Fat can be separated from milk in a cream separator because of Centrifugal forces.
23.
Identify the vector quantity from the following
Answer
Vector quantity is the quantity which has both magnitude and direction. Angular momentum is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.
Answer :
Option BExplanation :
Vector quantity is the quantity which has both magnitude and direction. Angular momentum is a vector quantity that represents the product of a body's rotational inertia and rotational velocity about a particular axis.
24.
The absorption of ink by blotting paper involves
Answer
The absorption of ink by blotting paper involves capillary action phenomenon because the blotting paper is a thin and a smooth paper which allows a little thicker liquids like ink to absorb.
Answer :
Option BExplanation :
The absorption of ink by blotting paper involves capillary action phenomenon because the blotting paper is a thin and a smooth paper which allows a little thicker liquids like ink to absorb.
25.
If a material, placed in a magnetic field is thrown out of it, then the material is
Answer
A material when placed in magnetic field is thrown out of it, the material is diamagnetic, as it is always repulsive to magnetic field.
Answer :
Option CExplanation :
A material when placed in magnetic field is thrown out of it, the material is diamagnetic, as it is always repulsive to magnetic field.
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