A. bright
B. dark for large wavelength
C. dark
D. bright for large wavelength
Related Mcqs:
- Newtons laws do not hold good for particles_______________?
A. at rest
B. moving slowly
C. move with high velocity
D. move with velocity comparable to velocity of light - In the shadow of a ball the central portion appears bright that happens due to_________________?
A. Interference
B. Diffraction
C. Polarization
D. Refraction - A central force is that which__________________?
A. Can produce torque
B. Cannot produce torque
C. Some time can produce torque some time cannot
D. Has no relation with torque - Optical active crystals rotates the __________________?
A. vibrating plane
B. polarization plane
C. diffraction plane
D. interference plane - Taking off rocket can be explained by __________________?
A. 1st law of motion
B. 2nd law of motion
C. Law of conservation of momentum
D. law of conservation of energy - If stretching force T of wire increases, then its frequency __________________?
A. decreases
B. increases
C. remains the same
D. any of above - It is possible to distinguish between transverse and longitudinal waves form the property of __________________?
A. refraction
B. polarization
C. interference
D. diffraction - If one or more of the neutrons emitted during fission cab be used to build up further fission then the reaction is self-sustained and is known as __________________?
A. Fission reaction
B. Fusion reaction
C. Chain reaction
D. Chemical reaction - Strontium-90 is used as __________________?
A. α-particle source
B. β-particle source
C. γ-rays source
D. Neutron source - The energy absorbed by a body is __________________ at resonance?
A. Maximum as well minimum
B. Minimum only
C. Maximum only
D. 0
