A large number of free electrons exist in

A) insulator

B) semi conductor

C) non-metals

D) metals

Correct Answer:
D) metals

Part of solved Physics questions and answers : >> General Science >> Physics


No comments available

Similar Questions
1). The excess of pressure inside a spherical bubble of radius r of a liquid of surface tension T is
A). \( \Large \frac{T}{r} \)
B). 0
C). \( \Large \frac{2T}{r} \)
D). \( \Large \frac{4T}{r} \)
-- View Answer
2). The refractive index of diamond is
A). 1
B). 1.33
C). 1.6
D). 2.42
-- View Answer
3). The digital camera is an input device mainly used to ......... images
A). capture
B). convert
C). connect
D). none of these
-- View Answer
4). Radioactivity was discovered by
A). Pierre Curie
B). Madam Curie
C). Rutherford
D). Henri Becquerel
-- View Answer
5). What does KDM 916 mean?
A). 9.16% pure gold
B). 90.16% pure gold
C). 9.16% copper
D). 91.6% pure gold
-- View Answer

6). Fuse wire is a wire of ............. resistance and ............. melting point
A). low, high
B). high, high
C). low, low
D). high, low
-- View Answer
7). The unit of capacitance is
A). coulomb
B). farad
C). ohm
D). gram
-- View Answer
8). Hydrogen bomb is based on the principle of
A). Nuclear explosion
B). Nuclear fusion
C). Nuclear fission
D). Slow reaction
-- View Answer
9). Positron was discovered by
A). Carl Anderson
B). Dirac
C). Madam Curie
D). Chadwick
-- View Answer
10). Fast Breeder Test Reactor
A). Trombay
B). Kaiga
C). Kudankulam
D). Kalpakkam
-- View Answer