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The energy gap between conductionband an...

The energy gap between conductionband and valence band is of the order of 0.07 eV. It is a/an

A

insulator

B

conductor

C

semiconductor

D

ailoy

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The correct Answer is:
B
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 21-PAPER 1 (PHYSICS & CHEMISTRY)
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  2. Two masses m1 and m2 (m1gtm2) are connected by massless flexible and i...

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  3. When a ferromagnetic material is heated to temperature above its Curie...

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  4. A rectangular vessel when full of water takes 10 minutes to be emptied...

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  5. A layer of glycerine of thickness 1 mm is present between a large surf...

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  6. Two coils of self-inductance L(1) and L(2) are placed closed to each o...

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  7. A new flashlight cell of e.m.f. 1.5 volts given a current of 15 amps. ...

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  8. In a transformer, the number of turns in primary coil and secondary co...

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  9. Two coherent monochromatic light beams of intensities I and 4 I are su...

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  10. In the relation x = cos (omegat + kx), the dimension(s) of omega is/a...

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  11. For the stationary wave y=4sin((pix)/(15))cos(96pit), the distance bet...

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  12. When monochromatic light is replaced by white light in Fresnel's bipri...

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  13. Wavelength of a 1 ke V photon is 1.24 xx 10^(-9) m. What is the freque...

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  14. A physical quantity Q is found ot depend on observables x, y and z obe...

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  15. Why is refractivce index in a transparent medium greater than one ?

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  16. A disc is rotating with angular velocity omega. If a child sits on it,...

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  17. A voltmeter having resistance of 50 × 10^(3) ohm is used to measure th...

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  18. Ground state energy of H-atom is -13.6 eV. The energy needed to ionise...

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  19. A plano convex lens of refractive index 1.5 and radius of curvature 30...

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  20. The energy gap between conductionband and valence band is of the order...

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