1
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
Change Language
For the forward biased diode characteristics shown in the figure, the dynamic resistance at ID = 3 mA will be __________ $$\Omega$$.

JEE Main 2021 (Online) 20th July Evening Shift Physics - Semiconductor Question 86 English
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2
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
Change Language
A series LCR circuit of R = 5$$\Omega$$, L = 20 mH and C = 0.5 $$\mu$$F is connected across an AC supply of 250 V, having variable frequency. The power dissipated at resonance condition is ______________ $$\times$$ 102 W.
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3
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
Change Language
One mole of an ideal gas at 27$$^\circ$$ is taken from A to B as shown in the given PV indicator diagram. The work done by the system will be _________ $$\times$$ 10$$-$$1 J. [Given : R = 8.3 J/mole K, ln2 = 0.6931] (Round off to the nearest integer)

JEE Main 2021 (Online) 20th July Evening Shift Physics - Heat and Thermodynamics Question 165 English
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4
JEE Main 2021 (Online) 20th July Evening Shift
Numerical
+4
-1
Change Language
A certain metallic surface is illuminated by monochromatic radiation of wavelength $$\lambda$$. The stopping potential for photoelectric current for this radiation is 3V0. If the same surface is illuminated with a radiation of wavelength 2$$\lambda$$, the stopping potential is V0. The threshold wavelength of this surface for photoelectric effect is ____________ $$\lambda$$.
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