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A rectangular vessel when full of water ...

A rectangular vessel when full of water takes 10 minutes to be emptied through an orifice in its bottom. How much time will it take to be emptied when half filled with water

A

9 min

B

7 min

C

5 min

D

3 min

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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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