36. Direction of induced e.m.f. is determined by-
(A) Fleming’s left hand rule
(B) Fleming’s right hand rule
(C) Maxwell’s rule
(D) Ampere’s rule of swimming
37. The use of reflector in the solar cooker is to
(A) decrease efficiency
(B) create green house effect
(C) increase efficiency
(D) no change in current
38. In a series circuit with two resistors, if one resistor is removed:
(A) current increases
(B) current decreases
(C) circuit becomes open
(D) no change in current
39. A convex mirror is preferred as a rear-view mirror in vehicles because:
(A) It gives a larger field of view
(B) It always produces a virtual image
(C) It produces an enlarged image
(D) Both A and B
40. When white light passes through a glass prism, the color that deviates the least is:
(A) Violet
(B) Green
(C) Blue
(D) Red