A. no interference fringes are observed
B. no diffraction fringes are observed
C. no fringes observed
D. interference pattern not disturbed
Related Mcqs:
- In double slit experiment we observe _____________________?
A. interference fringes only
B. diffraction fringes only
C. both interference and diffraction fringes
D. polirized frringes - In Young double slit experiment, if white light is used____________________?
A. alternate dark and bright fringes will be seen
B. coloured fringes will be seen
C. no interference fringes will be seen
D. impossible to predict - A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?
A. 500 mm
B. 5 x 10-3 mm
C. 2 x 10-5 mm
D. 2 x 10-3 mm - When fluid is incompressible then________________?
A. The velocity of the fluid is constant
B. The flow of the fluid is the straight line
C. The density of the fluid is constant
D. The volume of the fluid is constant - Which experiment shows that wavelength of light is smaller than that of sound___________________?
A. Diffraction
B. Polarization
C. Interference
D. Reflection - Distance covered by a freely falling body in 2 seconds will be__________________?
A. 4.9 m
B. 19.6 m
C. 39.2 m
D. 44.1 m - The distance covered by a body in time t starting from rest is__________________?
A. at2/2
B. Vt
C. a2t/2
D. at2 - Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________?
A. Trajectory
B. Range
C. Firing level
D. Limit - Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________?
A. πR
B. 2πR
C. 0
D. 4πR - The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________?
A. 10 cm
B. 5 cm
C. 15 cm
D. 7.5 cm
