A. Convex lens
B. Interferometer
C. Diffraction grating
D. Concave
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Related Mcqs:
- Optical active crystals rotates the __________________?
- A. vibrating plane B. polarization plane C. diffraction plane D. interference plane...
- The breaking of crystals along definite direction is called _____________________?
- A. Cleavage B. Symmetry C. Isotropy D. Homogeneity...
- Many of the semi conductors are crystals of the type__________________?
- A. Face centred cubic B. Body centred cubic C. Simple cubic D. All of the above...
- A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?
- A. Stress/strain B. (stress/strain) C. Stress x strain D. (Stress / strain)...
- Which one is the best material for making connecting wires ?
- A. iron B. tungsten C. silver D. copper...
- The net charge on n-type material is____________________?
- A. Positive B. Negative C. Both positive and negative D. Neutral...
- Which one of the following material is most suitable for making core of an electromagnet ?
- A. air B. steel C. Cu-Ni alloy D. soft iron...
- If a material object moves with speed of light its mass becomes ________________?
- A. equal to its rest mass B. double of its rest mass C. infinite D. zero...
- Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ?
- A. A & B B. B & C C. A & C D. A B & C...
- Electrons present in p-type material due to thermal pair generation are_____________?
- A. majority carriers B. minority carriers C. dual carriers D. blockers...
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