(A) Infrasonic wave
(B) Audible wave
(C) Microwave
(D) Ultrasonic wave
Stationary wave is formed by?
(A) A transverse wave superposing a longitudinal wave
(B) Two waves of same speed superposing
(C) Two waves of the same frequency travelling in the opposite direction
(D) None of the above
Hyper-metropia or long sightedness can be corrected by using?
(A) Concave lenses
(B) Convex lenses
(C) Cylindrical lenses
(D) Bifocal lenses
Optical fibers are based on the phenomenon of?
(A) Dispersion
(B) Diffraction
(C) Interference
(D) Total internal reflection
A mirage occurs because of?
(A) Interference of light
(B) Diffraction of light
(C) Reflection by hot ground
(D) Total internal reflection by layers of air
Among following which is a function of DBMS?
(A) Providing multi users access control
(B) Storing data
(C) Data integrity
(D) All of the above
Among following which is a procedural language?
(A) Tuple relational calculus
(B) Relational algebra
(C) Query language
(D) Domain relational calculus
What is relational calculus?
(A) It is a kind of procedural language
(B) It is a high level language
(C) It is a non-procedural language
(D) It is data definition language