1
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The P.E. 'U' of a moving particle of mass 'm' varies with 'x'-axis as shown in figure. The deBroglie wavelength or the particle in the regions $$0 \leq x \leq 1$$ and $$x > 1$$ are $$\lambda_1$$ and $$\lambda_2$$ respectively. II the total energy of the particle is '$$\mathrm{nE}$$', then the ratio $$\lambda_1 / \lambda_2$$ is

MHT CET 2021 20th September Evening Shift Physics - Atoms and Nuclei Question 29 English

A
$$\sqrt{\frac{n^2}{n-1}}$$
B
$$\sqrt{\frac{n-1}{n}}$$
C
$$\sqrt{\frac{\mathrm{n}}{\mathrm{n}-1}}$$
D
$$\sqrt{\frac{\mathrm{n}(\mathrm{n}-1)}{\mathrm{n}}}$$
2
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

An inductive coil has a resistance of $$100 ~\Omega$$. When an a.c. signal of frequency $$1000 \mathrm{~Hz}$$ is applied to the coil the voltage leads the current by $$45^{\circ}$$. The inductance of the coil is $$\left(\tan 45^{\circ}=1\right.$$)

A
$$\frac{0.25}{2 \pi} \mathrm{H}$$
B
$$\frac{0.05}{\pi} \mathrm{H}$$
C
$$\frac{0.25}{\pi} \mathrm{H}$$
D
$$\frac{0.5}{\pi} \mathrm{H}$$
3
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of radii of gyration of a circular ring and circular disc of the same mass and radius, about an axis passing through their centres and perpendicular to their planes is

A
$$1:\sqrt2$$
B
$$2:1$$
C
$$\sqrt2:1$$
D
$$3:2$$
4
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two wires carrying currents $$5 \mathrm{~A}$$ and $$2 \mathrm{~A}$$ are enclosed in a circular loop as shown in the figure. Another wire carrying a current of $$3 \mathrm{~A}$$ is situated outside the loop. The value of $$\oint \overrightarrow{\mathrm{B}} \overrightarrow{\mathrm{d} l}$$ around the loop is ( $$\mu_0=$$ permeability of free space, $$\overrightarrow{\mathrm{d} l}$$ is the length of the element on the Amperion loop)

MHT CET 2021 20th September Evening Shift Physics - Moving Charges and Magnetism Question 38 English

A
$$4 \mu_0$$
B
$$2 \mu_0$$
C
$$3 \mu_0$$
D
$$\mu_0$$
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