Basic Concepts of Physics
In cold countries glycerol is added to water in car radiators as it helps to
Lower the specific heat of water
Lower the viscosity of water
Lower the freezing point of water
Improve the lubricity
Lower the freezing point of water
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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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