MHT CET 2020 16th October Evening Shift | MHT CET Year Wise Previous Years Questions

A particle performs simple harmonic motion with period of 3 s . The time taken by it to cover a distance equal to half the amplitude from mean position is [$$\sin 30^{\circ}=0.5$$]

$$\frac{1}{4} \mathrm{~s}$$

$$\frac{3}{2} \mathrm{~s}$$

$$\frac{3}{4} \mathrm{~s}$$

$$\frac{1}{2} \mathrm{~s}$$

MHT CET 2020 16th October Evening Shift

MCQ (Single Correct Answer)

-0

A sonometer wire under suitable tension having specific gravity $$\rho$$, vibrates with frequency $$n$$ in air. If the load is completely immersed in water the frequency of vibration of wire will become

$$\left[\frac{\rho-1}{n \rho}\right]^{\frac{1}{2}}$$

$$n\left[\frac{\rho-1}{\rho}\right]^{\frac{1}{2}}$$

$$n\left[\frac{\rho}{\rho-1}\right]^{\frac{1}{2}}$$

$$\left[\frac{n \rho}{\rho-1}\right]^{\frac{1}{2}}$$

MHT CET 2020 16th October Evening Shift

MCQ (Single Correct Answer)

-0

A radioactive nucleus emits $$4 \alpha$$-particles and $$7 \beta$$-particles in succession. The ratio of number of neutrons of that of protons, is [$$A=$$ mass number, $$Z=$$ atomic number]

$$\frac{A-Z-13}{Z-2}$$

$$\frac{A-Z-15}{Z-1}$$

$$\frac{A-Z-13}{Z-1}$$

$$\frac{A-Z-11}{Z-2}$$

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