Practice Ibps questions set 3 - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) What is the number of neutral points for a bar magnet with its north pole pointing geographical north?
(a)
(b)
(c)
(d)
Q-2) Lenz’s law is a consequence of the law of conservation of
(a)
(b)
(c)
(d)
Q-3) A 100 watt electric bulb is used for 10 hours. What will be the cost of electricity consumed, if the consumption cost is Rs.5 per unit?
(a)
(b)
(c)
(d)
Q-4) The frequency of A.C. mains in India is
(a)
(b)
(c)
(d)
Q-5) In a semiconductor, the concentration of electrons is 8 × 1014/cm3 and that of the holes is 5 × 1012 cm3 . The semiconductor is
(a)
(b)
(c)
(d)
Explanation:
Since, $n_e > n_h$, the semiconductor is n-type.
Q-6) The value of 1 kilowatt hour is
(a)
(b)
(c)
(d)
Q-7) In the symbol of a transistor , the arrow head points in the direction of flow of
(a)
(b)
(c)
(d)
Q-8) The laws of electromagnetic induction have been used in the construction of a
(a)
(b)
(c)
(d)
Q-9) Consider the following statements : - The magnetic pole in the northern hemisphere is the north magnetic pole.
- At all points on a magnet, an iron bar gets attracted.
Which of the statements given above is/are correct ?
(a)
(b)
(c)
(d)
Explanation:
The magnetic the northern hemisphere is south magnetic pole.
Q-10) If the focal length of the biconvex lens is 25 cm, then the power of the lens will be
(a)
(b)
(c)
(d)