MHT CET 2021 23th September Morning Shift | MHT CET Year Wise Previous Years Questions

MHT CET 2021 23th September Morning Shift

MCQ (Single Correct Answer)

-0

The magnitude of flux linked with coil varies with time as $$\phi=3 t^2+4 t+7$$. The magnitude of induced e.m.f. at $$t=2 \mathrm{~s}$$ is

3 V

16 V

10 V

7 V

MHT CET 2021 23th September Morning Shift

MCQ (Single Correct Answer)

-0

At what rate a single conductor should cut the magnetic flux so that current of $$1.5 \mathrm{~mA}$$ flows through it when a resistance of $$5 \Omega$$ is connected across its ends?

$$6 \times 10^{-3} \frac{\mathrm{wb}}{\mathrm{s}}$$

$$8 \times 10^{-3} \frac{\mathrm{wb}}{\mathrm{s}}$$

$$4 \times 10^{-4} \frac{\mathrm{wb}}{\mathrm{s}}$$

$$7.5 \times 10^{-3} \frac{\mathrm{wb}}{\mathrm{s}}$$

MHT CET 2021 23th September Morning Shift

MCQ (Single Correct Answer)

-0

If we increase the frequency of an a.c. supply, then inductive reactance

increases directly with the square of frequency

increases as it directly proportional to frequency

decreases inversely with the square of frequency

decreases as it is inversely proportional to the frequency

MHT CET 2021 23th September Morning Shift

MCQ (Single Correct Answer)

-0

An electron of mass '$$m$$' and a photon have same energy '$$E$$'. The ratio of de-Broglie wavelength of electron to the wavelength of photon is $$(\mathrm{c}=$$ velocity of light)

$$c \sqrt{\frac{E}{m}}$$

$$\frac{1}{c} \sqrt{\frac{2 m}{g}}$$

$$\frac{1}{c} \sqrt{\frac{E}{2 m}}$$

$$c \sqrt{\frac{m}{E}}$$

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