Consider the following statements: The energy band gap of GaAs 1. is indirect. 2. is direct. 3. is 1.43 eV. 4. corresponds to wavelength of 0 89 m. (Given h = 6.63 10 34 joule-sec) Of these the correct statements is/are:

Consider the following statements: The energy band gap of GaAs 1. is i

1.	Consider the following statements: The energy band gap of GaAs 1. is indirect. 2. is direct. 3. is 1.43 eV. 4. corresponds to wavelength of 0 89 m. (Given h = 6.63 10 34 joule-sec) Of these the correct statements is/are:
A.	1 alone
B.	2, 3 and 4
C.	2 and 3
D.	1 and 4
Answer» C. 2 and 3

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Consider the following statements: The energy band gap of GaAs 1. is indirect. 2. is direct. 3. is 1.43 eV. 4. corresponds to wavelength of 0 89 m. (Given h = 6.63 10 34 joule-sec) Of these the correct statements is/are:

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