1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Potential difference between the points P and Q is nearly

MHT CET 2023 11th May Evening Shift Physics - Current Electricity Question 114 English

A
17 V
B
14 V
C
12 V
D
8 V
2
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil having effective area '$$A$$' is held with its plane normal to a magnitude field of induction '$$\mathrm{B}$$'. The magnetic induction is quickly reduced to $$25 \%$$ of its initial value in 1 second. The e.m.f. induced in the coil (in volt) will be

A
$$\frac{\mathrm{BA}}{4}$$
B
$$\frac{\mathrm{BA}}{2}$$
C
$$\frac{3 \mathrm{BA}}{8}$$
D
$$\frac{3 \mathrm{BA}}{4}$$
3
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The path difference between two waves, represented by $$\mathrm{y}_1=\mathrm{a}_1 \sin \left(\omega \mathrm{t}-\frac{2 \pi \mathrm{x}}{\lambda}\right)$$ and $$y_2=a_2 \cos \left(\omega t-\frac{2 \pi x}{\lambda}+\phi\right)$$ is

A
$$\frac{\lambda}{2 \pi}(\phi)$$
B
$$\frac{\lambda}{2 \pi}\left(\phi+\frac{\pi}{2}\right)$$
C
$$\frac{2 \pi}{\lambda}\left(\phi-\frac{\pi}{2}\right)$$
D
$$\frac{2 \pi}{\lambda}(\phi)$$
4
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An electromagnetic wave, whose wave normal makes an angle of $$45^{\circ}$$ with the vertical, travelling in air strikes a horizontal liquid surface. While travelling through the liquid it gets deviated through $$15^{\circ}$$. What is the speed of the electromagnetic wave in the liquid, if the speed of electromagnetic wave in air is $$3 \times 10^8 \mathrm{~m} / \mathrm{s}$$ ? $$\left(\sin 30^{\circ}=0.5, \sin 45^{\circ}=\frac{1}{\sqrt{2}}\right)$$

A
$$\frac{\sqrt{2}}{3} \times 10^8 \mathrm{~m} / \mathrm{s}$$
B
$$1.5 \times 10^8 \mathrm{~m} / \mathrm{s}$$
C
$$2.1 \times 10^8 \mathrm{~m} / \mathrm{s}$$
D
$$2.5 \times 10^8 \mathrm{~m} / \mathrm{s}$$
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