Search
.Management Sciences
Category: Physics Mcqs
In a photoelectric effect monochromatic light is incident on a metal surface. If the incident light of twice the intensity but of same wavelength the kinetic energy of the emitted electron_______________?
0
A. Becomes double
B. Remains same
C. Becomes half
D. First increases then decrease because of the curvilinear graph
Velocity of fluid increases where the pressure is________________?
A. Low
B. High
C. Constant
D. Changes continuously
Zero error of the instrument is a type of_________________?
A. Random error
B. Personal error
C. Systematic error
D. Classified error
When the speed of a moving body is doubled then___________________?
A. its K.E is doubled
B. its acceleration is doubled
C. its P.E is doubled
D. its momentum is doubled
On loading the prong of a tuning form with wax its frequency____________________?
A. increases
B. decreases
C. remains unchanged
D. may increase or decrease
UV radiation can be produced by______________?
A. Heating the filament
B. Electron excitation in the gas
C. Ionization of atoms
D. All the above
In a plane polarized light _________________?
A. vibration in all direction
B. vibration in two mutually perpendicular directions
C. vibration take place in a direction perpendicular to the direction of propagation of light
D. no vibration at all
Recent Comments