Home / Atoms and Electrons – 1 – 8

Atoms and Electrons – 1 – 8

36. What is the de Broglie wavelength of neutrons at room temperature ?

(a) 0.145 nm
(b) 0.82 nm
(c) 0.64 nm
(d) 4.23 nm

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

37. Germanium has a :

(a) Diamond cube (dc) structure
(b) Simple cube (sc) structure
(c) Face centered cube (fcc) structure
(d) Body centered cube (bcc) structure

Answer
Answer : (a)

Explanation
No answer description available for this question. Let us discuss.

38. The electron mobility is greater in :

(a) Germanium
(b) Silicon
(c) Gallium arsenide
(d) Bakelite

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

39. The relative distance of the electron from the nucleus is same as :

(a) The relative distance between Earth and Moon
(b) The relative distance between Sun and Earth
(c) The relative distance between Earth and Pluto
(d) The relative distance between Sun and Pluto

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

40. One part of donor impurities to 108 parts of germanium :

(a) Increases the conductivity of the crystal twofold
(b) Increases the conductivity of the crystal fourfold
(c) Increases the conductivity of the crystal eightfold
(d) Increases the conductivity of the crystal tenfold

Answer
Answer : (c)

Explanation
No answer description available for this question. Let us discuss.

1 2 3 4 5 6 7 8 9 10

General Knowledge Books

Be a Part of the New & Next

MCQs fb  MCQs G+

Share the Knowledge

MORE INFORMATION
GATE Total InfoGATE 2019 BooksFree Notes
IES Total InfoIES 2019 BooksFree Mock tests
JAM Total InfoJAM 2019 BooksEngg Diploma
PSUs Total InfoM Tech Total InfoUGC NET Total Info

Leave a Reply

Your email address will not be published. Required fields are marked *

Copy Protected by Chetan's WP-Copyprotect.