1. What is the complementary color of yellow?
(A) Blue
(B) Green
(C) Orange
(D) Red
ANS. (A) Blue
2. Which color deflection is highest among the colors obtained from the sun
(A) Red
(B) Orange
(C) Yellow
(D) Purple
ANS. (D) Purple
3. Used to make permanent magnets?
(A) soft iron
(B) Germanium
(C) Silicon
(D) Steel
ANS. (D) Steel
4. Which of the following substances has the highest specific heat?
(A) Ice
(B) sand
(C) water
(D) Iron
ANS. (C) Water
5. Inside the electric bulb -
(A) remains vacuum
(B) the air is full
(C) Inert gas is full
(D) Hydrogen is full
ANS. (C) Inert gas is full
6. In which order the fan, bulb etc. appliances are installed in the houses?
(A) in parallel order
(B) In order
(C) in any order
(D) in no order
ANS. (A) in parallel order
7. Whose unit is the Newton meter?
(A) acceleration
(B) force
(C) power
(D) Energy
ANS. (D) Energy
8. By which speed of Newton's law does the expression of force be obtained?
(A) First
(B) Second
(C) Third
(D) None
ANS. (B) II
9. Which mirror is used in the headlight of vehicles?
(A) concave
(B) convex
(C) plane
(D) Bisexual
ANS. (A) concave
10. Which of the following is a semi-driver?
(A) Silicon
(B) Germanium
(C) Iron
(D) (A) and (B) both
ANS. (D) (A) and (B) both
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