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JEE Main 2020 (Online) 6th September Evening Slot
Numerical
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A Young's double-slit experiment is performed using monochromatic light of wavelength $$\lambda $$. The intensity of light at a point on the screen, where the path difference is $$\lambda $$, is K units. The intensity of light at a point where the path difference is $${\lambda \over 6}$$ is given by $${{nK} \over {12}}$$, where n is an integer. The value of n is __________.
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2
JEE Main 2020 (Online) 6th September Evening Slot
Numerical
+4
-0
Change Language
The centre of mass of solid hemisphere of radius 8 cm is x from the centre of the flat surface. Then value of x is __________.
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3
JEE Main 2020 (Online) 6th September Evening Slot
Numerical
+4
-0
Out of Syllabus
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The output characteristics of a transistor is shown in the figure.
When VCE is 10V and IC = 4.0 mA, then value of $$\beta $$ac is __________. JEE Main 2020 (Online) 6th September Evening Slot Physics - Semiconductor Question 109 English
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4
JEE Main 2020 (Online) 6th September Evening Slot
Numerical
+4
-0
Change Language
In a series LR circuit, power of 400W is dissipated from a source of 250 V, 50 Hz. The power factor of the circuit is 0.8. In order to bring the power factor to unity, a capacitor of value C is added in series to the L and R. Taking the value of C as $$\left( {{n \over {3\pi }}} \right)$$ $$\mu $$F, then value of n is __________.
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