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.Management Sciences
Category: Physics Mcqs
Which of the following will be a better shield against gamma rays ?
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A. Ordinary water
B. Heavy water
C. Lead
D. Aluminum
In an electronic transition atom cannot emit______________?
A. γ-rays
B. Infra red radiation
C. Visible light
D. Ultraviolet rays
The electronic circuits which implement the various logic operations are called_____________?
A. Logic gates
B. Boolean algebra
C. Amplifier gain
D. Logic functions
A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________?
A. remains the same
B. is doubled
C. is halved
D. becomes zero
All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________?
A. same current
B. same current and potential difference
C. different current but same potential difference
D. different current and potential differences
X-rays are electromagnetic waves like________________?
A. Light waves
B. Heat waves
C. Microwaves
D. γ-rays
When an electron moving with a uniform speed in a vacuum enters a magnetic field in a direction perpendicular to the field the subsequent path of the electron is ___________________?
A. a straight line parallel to the field
B. a parabola in a plane perpendicular to the field
C. a circle in a plane perpendicular to the field
D. a straight line along its initial direction
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