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JEE Main 2022 (Online) 26th July Morning Shift
Numerical
+4
-1
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Resistances are connected in a meter bridge circuit as shown in the figure. The balancing length $$l_{1}$$ is $$40 \mathrm{~cm}$$. Now an unknown resistance $$x$$ is connected in series with $$\mathrm{P}$$ and new balancing length is found to be $$80 \mathrm{~cm}$$ measured from the same end. Then the value of $$x$$ will be ____________ $$\Omega$$.

JEE Main 2022 (Online) 26th July Morning Shift Physics - Current Electricity Question 91 English

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2
JEE Main 2022 (Online) 26th July Morning Shift
Numerical
+4
-1
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The effective current I in the given circuit at very high frequencies will be ___________ A.

JEE Main 2022 (Online) 26th July Morning Shift Physics - Alternating Current Question 49 English

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3
JEE Main 2022 (Online) 26th July Morning Shift
Numerical
+4
-1
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The graph between $$\frac{1}{u}$$ and $$\frac{1}{v}$$ for a thin convex lens in order to determine its focal length is plotted as shown in the figure. The refractive index of lens is $$1.5$$ and its both the surfaces have same radius of curvature $$R$$. The value of $$R$$ will be ____________ $$\mathrm{cm} .$$ (where $$u=$$ object distance, $$v=$$ image distance)

JEE Main 2022 (Online) 26th July Morning Shift Physics - Geometrical Optics Question 57 English

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4
JEE Main 2022 (Online) 26th July Morning Shift
Numerical
+4
-1
Change Language

In the hydrogen spectrum, $$\lambda$$ be the wavelength of first transition line of Lyman series. The wavelength difference will be "a$$\lambda$$'' between the wavelength of $$3^{\text {rd }}$$ transition line of Paschen series and that of $$2^{\text {nd }}$$ transition line of Balmer series where $$\mathrm{a}=$$ ___________.

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