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JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
Change Language
A solid disc of radius 'a' and mass 'm' rolls down without slipping on an inclined plane making an angle $$\theta$$ with the horizontal. The acceleration of the disc will be $${2 \over b}$$g sin$$\theta$$ where b is ____________. (Round off to the Nearest Integer) (g = acceleration due to gravity, $$\theta$$ = angle as shown in figure)

JEE Main 2021 (Online) 16th March Evening Shift Physics - Rotational Motion Question 88 English
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2
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
Change Language
The energy dissipated by a resistor is 10 mJ in 1 s when an electric current of 2 mA flows through it. The resistance is ___________$$\Omega$$. (Round off to the Nearest Integer)
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3
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
Out of Syllabus
Change Language
For an ideal heat engine, the temperature of the source is 127$$^\circ$$C. In order to have 60% efficiency the temperature of the sink should be ___________$$^\circ$$C. (Round off to the Nearest Integer)
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4
JEE Main 2021 (Online) 16th March Evening Shift
Numerical
+4
-1
Change Language
In a parallel plate capacitor set up, the plate area of capacitor is 2 m2 and the plates are separated by 1 m. If the space between the plates are filled with a dielectric material of thickness 0.5 m and area 2 m2 (see fig.) the capacitance of the set-up will be __________$$\varepsilon $$o. (Dielectric constant of the material = 3.2) (Round off to the Nearest Integer)

JEE Main 2021 (Online) 16th March Evening Shift Physics - Capacitor Question 72 English
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