Which metal is used to make a solar cell?
(A) Steel
(B) Silicon
(C) Abarkha
(D) glass
Which one of the following common devices works on the basis of the principle of mutual induction?
(A) Tubelight
(B) Transformer
(C) Photodiode
(D) LED
Denmark is called?
(A) Country of Industry
(B) Hydropower Country
(C) Country of the winds
(D) Country of mineral clusters
Maxwell is unit of
(A) Intensity of magnetization
(B) Permeability
(C) Magnetic flux
(D) Magnetic susceptibility
Which is the largest source of energy on earth?
(A) Sun
(B) wood
(C) Moon
(D) Coal
When resistors are connected in series, then net resistance____.
(A) Increases
(B) Decreases
(C) Remains same
(D) None of these
Which of the following is renewable energy?
(A) Coal
(B) Solar energy
(C) Natural Gas
(D) Petrol
Necessary to get nuclear energy?
(A) Chromium
(B) Silicon
(C) Uranium
(D) Aluminum
Who is considered as the ultimate source of all forms of energy?
(A) Coal
(B) Atom
(C) Water
(D) Sun
What type of energy is used to perform bodily functions?
(A) electric energy
(B) Solar energy
(C) muscle energy
(D) Chemical energy
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