A. diffraction
B. dispersion
C. interference
D. polarization
Related Mcqs:
- The blue colour of the sky is due to___________________?
A. diffraction
B. reflection
C. polarization
D. scattering - When light incident normally on thin film the path difference depends upon ________________?
A. thickness of the film only
B. nature of the film only
C. angle of indidence only
D. all thickness nature and angle of incidence - When same current passes for same time through a thick and thin wire_________________?
A. more heat is produced in thick wire
B. more heat is produced in thin wire
C. no heat is produced in wire
D. less heat is produced in thick wire - Photoelectric effect was given by ____________________?
A. Hertz
B. Fresnel
C. Einstein
D. Plank - 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 collision between the bodies in a system is inelastic in nature then for system ____________________?
A. momentum changes but K.E remain conserve
B. K.E changes but momentum remain conserve
C. both momentum and K.E changes
D. both momentum and K.E remain conserve - On a clear day at noon the solar energy reaching the earth is ____________________?
A. 1.44kw/m2
B. 1.4kw/m2
C. 1 kw/m2
D. none - The curie temperature is that at which ____________________?
A. Semi-conductor becomes conductors
B. Ferromagnetic becomes paramagnetic
C. Paramagnetic becomes diamagnetic
D. Metals become super conductor - Coercive force is the force which opposes ____________________?
A. Demagnetization
B. Breakage
C. Extension
D. Surface cracking - A galvanometer basically is an instrument used to ____________________?
A. detect current in a circuit
B. measure current flowing through a circuit
C. measure voltage across a circuit
D. measure potential difference between two points in a circuit
