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QJEE MAIN 2019
A particle is moving with speed $v=b \sqrt{x}$ along positive $x$-axis. Calculate the speed of the particle at time $t=\tau$ (assume that the particle is...
JEE MainPhysicsMedium
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QJEE MAIN 2019
Formation of real image using a biconvex lens is shown below: If the whole set...
JEE MainPhysicsMedium
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QJEE MAIN 2019
A transparent cube of side $d$, made of a material of refractive index $\mu_2$, is immersed in a liquid of refractive index $\mu_1\left(\mu_1<\mu_2\right)$. A ray...
JEE MainPhysicsMedium
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QJEE MAIN 2019
A particle of mass 20 g is released with an initial velocity $5 \mathrm{~m} / \mathrm{s}$ along the curve from the point A , as...
JEE MainPhysicsMedium
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QJEE MAIN 2019
The pressure wave, P = 0.01sin $[1000 \mathrm{t}-3 \mathrm{x}] \mathrm{Nm}^{-2}$ , corresponds to the sound produced by a vibrating blade on a day when atmospheric...
JEE MainPhysicsMedium
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QJEE MAIN 2019
A load of mass M kg is suspended from a steel wire of length 2 m and radius 1.0 mm in Searle’s apparatus experiment. The...
JEE MainPhysicsMedium
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QJEE MAIN 2019
A smooth wire of length $2 \pi r$ is bent into a circle and kept in a vertical plane. A bead can slide smoothly on...
JEE MainPhysicsMedium
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QJEE MAIN 2019
When a certain photosensistive surface is illuminated with monochromatic light of frequency $v$, the stopping potential for the photo current is $-\frac{\mathrm{V}_0}{2}$. When the surface...
JEE MainPhysicsMedium
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QJEE MAIN 2019
A moving coil galvanometer has resistance $50 \Omega$ and it indicates full deflection at 4 mA current. A voltmeter is made using this galvanometer and...
JEE MainPhysicsMedium
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QJEE MAIN 2019
In the given circuit diagram, the currents, $\mathrm{I}_1=-0.3 \mathrm{~A}, \mathrm{I}_4=0.8 \mathrm{~A}$ and $\mathrm{I}_5=0.4 \mathrm{~A}$, are flowing as shown. The currents $\mathrm{I}_2, \mathrm{I}_3$ and $\mathrm{I}_6$, respectively,...
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