A. a cylindrical wave front
B. an elliptical wave front
C. a spherical wave front
D. a plane wave front
Related Mcqs:
- Gives the definition of metre in terms of wavelength of red cadmium light ___________________?
A. Newton
B. Einstein
C. Michelson
D. Galileo - Which one of the following properties of light does not change with the nature of the medium ?
A. velocity
B. wavelength
C. amplitude
D. frequency - A light ray traveling form rarer to denser medium suffers a phase change of__________________?
A. 60°
B. 90°
C. 180°
D. 45° - After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?
A. Increases because wavelength decreases
B. Decreases because speed decreases
C. Remains same
D. Increases then decrease - Medium which sends signal from source to destination is known as ________ ?
A. Transmitter
B. Transmission channel
C. Receiver
D. HardwareSubmitted by: Rashid Mehmood
- If a diffraction grating is placed in the path of a light beam it reveals______________?
A. Wave property
B. Particle property
C. Energy particle
D. Electromagnetic wave property - 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_______________?
A. Becomes double
B. Remains same
C. Becomes half
D. First increases then decrease because of the curvilinear graph - Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f ?
A. 40 W
B. 90W
C. 100W
D. 120W - Light on passing through a Polaroid is ___________________?
A. plane polarized
B. un-polarized
C. circularly polarized
D. elliptically polarized - The locus of all points in a medium having the same phase of vibration is called____________________?
A. crest
B. trough
C. wavelength
D. wave front
