Polytechnic TRB Physics Model Question Paper with Answer Keys - 3

Question: 11

The distance of a virtual image from the pole of the mirror is referred to a

(A) + V

(B) - V

(C) + U

(D) - U

Question: 12

Solar energy is produced by the following reaction

(A) Fission reaction

(B) Fusion reaction

(C) Chemical reaction

(D) None of these

Question: 13

Which of the following is true when the cells are connected in series?

(A) Current capacity increases

(B) Current capacity decreases

(C) The emf decreases

(D) The emf increases

Question: 14

Wright Brothers are regarded inventors of the

(A) Aeroplane

(B) Bicycle

(C) Balloon

(D) Computer

Question: 15

What is the unit for measuring the pitch or frequency of sound?

(A) Hum

(B) Cycles

(C) Coulomb

(D) Decible