MHT CET 2021 24th September Evening Shift | MHT CET Year Wise Previous Years Questions

Four electric charges $$+\mathrm{q},+\mathrm{q},-\mathrm{q}$$ and $$-\mathrm{q}$$ are placed in order at the corners of a square of side $$2 \mathrm{~L}$$. The electric potential at point midway between the two positive charges is

$$\frac{1}{4 \pi \epsilon_0} \frac{2 \mathrm{q}}{\mathrm{L}}(1-\sqrt{5})$$

zero

$$\frac{1}{4 \pi \epsilon_0} \frac{2 q}{L}\left(1+\frac{1}{\sqrt{5}}\right)$$

$$\frac{1}{4 \pi \epsilon_0} \frac{2 q}{L}\left(1-\frac{1}{\sqrt{5}}\right)$$

MHT CET 2021 24th September Evening Shift

MCQ (Single Correct Answer)

-0

White light consists of wavelengths from $$480 \mathrm{~nm}$$ to $$672 \mathrm{~nm}$$. What will be the wavelength range when white light is passed through glass of refractive index 1.6?

$$420 \mathrm{~nm}-672 \mathrm{~nm}$$

$$300 \mathrm{~nm}-480 \mathrm{~nm}$$

$$300 \mathrm{~nm}-420 \mathrm{~nm}$$

$$300 \mathrm{~nm}-672 \mathrm{~nm}$$

MHT CET 2021 24th September Evening Shift

MCQ (Single Correct Answer)

-0

A metal sphere cools at the rate of $$1.5^{\circ} \mathrm{C} / \mathrm{min}$$ when its temperature is $$80^{\circ} \mathrm{C}$$. At what rate will it cool when its temperature falls to $$50^{\circ} \mathrm{C}$$. [Temperature of surrounding is $$30^{\circ} \mathrm{C}$$]

$$0.9^{\circ} \mathrm{C} / \mathrm{min}$$

$$0.6^{\circ} \mathrm{C} / \mathrm{min}$$

$$1.5^{\circ} \mathrm{C} / \mathrm{min}$$

$$1.2^{\circ} \mathrm{C} / \mathrm{min}$$

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