Basic Concepts of Physics
There is along steel pipe fixed in a compound. One boy stands at one end of the pipe and places his ear at the end. If another boy strikes the other portion of the pipe, the first boy will hear
One sound
Two sounds
Infinite sounds
No sound
Two sounds
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What Greek letter is used to denote frequency?A. Lambda
B. Nu
C. Phi
D. Kappa
The restoring force is always directed towards the
A. Initial position
B. Final positions
C. Rest position or mean position
D. All of these
What type of EM radiation gives people tans?
A. Gamma
B. infrared
C. Ultraviolet
D. visible
The wire of an electric lamp has a
A. High resistance and a high melting point
B. High resistance and a low melting point
C. Low resistance and a low melting point
D. Low resistance
In which process, the photon emits to produce laser beam
A. Induced absorption
B. Spontaneous emission
C. Induced emission
D. All of these
A specific mass of pure water is frozen to form completely transparent ice, in the shape of a lens. When forced underwater, the lens diverges light. What is the shape of the lens?
A. Concave lens
B. Convexo-concave lens
C. Cylindrical lens
D. Convex lens
The ratio of the velocity of the body to the velocity of the sound is called
A. Magic number
B. Replace number
C. Natural number
D. Match number
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