1
MHT CET 2023 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A source of sound is moving towards a stationary observer with $$\left(\frac{1}{10}\right)^{\text {th }}$$ the of the speed of sound. The ratio of apparent to real frequency is

A
$$10: 9$$
B
$$11: 10$$
C
$$(11)^2:(10)^2$$
D
$$(9)^2:(10)^2$$
2
MHT CET 2023 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $$\mathrm{E}_{\mathrm{a}}$$ and $$\mathrm{E}_{\mathrm{q}}$$ represent the electric field intensity due to a short dipole at a point on its axial line and on the equatorial line at the same distance '$$r$$' from the centre of the dipole, then

A
$$\mathrm{E}_{\mathrm{a}}=\mathrm{E}_{\mathrm{q}}$$
B
$$\mathrm{E}_{\mathrm{a}}=\frac{1}{2} \mathrm{E}_{\mathrm{q}}$$
C
$$\mathrm{E}_{\mathrm{a}}=\frac{1}{\sqrt{2}} \mathrm{E}_{\mathrm{q}}$$
D
$$\mathrm{E}_{\mathrm{a}}=2 \mathrm{E}_{\mathrm{q}}$$
3
MHT CET 2023 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In potentiometer experiment, the balancing length is $$8 \mathrm{~m}$$ when two cells $$E_1$$ and $$E_2$$ are joined in series. When two cells are connected in opposition the balancing length is $$4 \mathrm{~m}$$. The ratio of the e.m.f. of the two cells $$\left(\frac{E_1}{E_2}\right)$$ is

A
$$1: 2$$
B
$$2: 1$$
C
$$1: 3$$
D
$$3: 1$$
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