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Two identical wires have the same fundam...

Two identical wires have the same fundamental frequency of 400 Hz . when kept under the same tension. If the tension in one wire is increased by 2% the number of beats produced will be

A

4

B

2

C

8

D

1

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A
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 20-PAPER 1 (Physics & Chemistry)
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  5. The optical path of a monochromatic light is same if it goes through 4...

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  6. A body cool from 50.0^(@)C to 39.9^(@)C in 5 s . How long will it take...

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  7. When a celling fan is switched off, its angular velocity falls to half...

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  8. In an interference experiment , phase difference for points where the ...

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  9. A TV tower has a height of 150 m. The area of the region covered by th...

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

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  11. Identify the correct statement from the following:

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  13. A slit of size 0.15m is placed at 2.1m from a screen. On illuminated i...

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  14. A thin mica sheet of thickness 2xx10^-6m and refractive index (mu=1.5)...

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  15. The photoelectrons emitted from a given cathode , on the incidence of...

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  16. If the forward voltage in p-n junction is increased , the length of de...

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  17. The de-Broglie wavelength of proton (" charge" = 1.6 xx 10^(-19)C, "ma...

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  18. A galvonometer of resistance 20 Omega gives a full scale deflection w...

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  19. The wavelength of light observed on the earth , from a moving star is ...

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  20. Diameter of a plano-convex lens is 6 cm and thichness at the centre is...

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