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
Explanation:
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
Explanation:
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
Explanation:
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
Explanation:
40. When white light passes through a glass prism, the color that deviates the least is:
(A) Violet
(B) Green
(C) Blue
(D) Red
Explanation: