80.

81.

82.

83.

84,

85,

86.

87.

88,

89.

90.

Where does the code used by a microprocessor when it is first switched on is stored ?

(A) RAM

(B)

Hard disk drive

(C) ROM (D) Cache memory

The reduced form of the Boolean expression A.B.(B+ C) is

(A) A+B

(0)

The output of a 3-input NAND gate is low when
(A) 81 inputs are low.

(8)

(B) A+B
A+B (D) A+B

one input is high.

(C) more than one input is high. (D) All inputs are high.
What is the width of the address bus in 8085 ?

(A) 4- bit (8) 8 - bit

(C) 16-bit (D) 32-bit

What is the type of interrupt in 8085 where
processor ?
(^^) Vector interrupt

the interrupt address is known to the

(B) Non-Vector interrupt

(6) Maskable interrupt (D) Non-Maskable interrupt
How many comparators are required ina flash ADC with 8 - bit output ?

(A) 7 (B) 8

(0) 16 (D) 255
What is the capacity of the onboard RAM of the microcontroller 8051 ?

(ಹ) 16 bytes (B) 64 bytes

(C) 128 bytes (D) 256 bytes
Which among the following laser has a quasi-three-level system ?

(ಹ) Ruby laser (B) Nd:YAG

(©) He:Ne (D) Yb:YAG

Which line broadening is due to the fact that atomic resonance frequencies are distributed

over a band of frequencies ?
(A) Homogeneous broadening
(C) Inhomogeneous broadening (

‎Natural broadening‏ رق

‎D) Pressure broadening

‎Which laser uses chemical pumping to achieve population inversion ?

‎(A) Argon Laser

‎(6) Carbon-dioxide Laser (
Identify the second order nonlinear optical
susceptibility (©).

‎(A) Optical Kerr effect.

‎(C) Stimulated Raman scattering. (

‎13

‎(B)

‎(B) All Gas-Phase Iodine Laser

‎7) Helium-Neon Laser
phenomena related to the quadratic
Four-wave mixing.
D) Sum-frequency generation.
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[P.T.O.]