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QJEE MAIN 2024
The vertices of a triangle are A(-1,3),B(-2,2) and C(3,-1). A new triangle is formed by shifting the sides of the triangle by one unit inwards....
JEE MainMathematicsHard
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QJEE MAIN
A LCR circuit is at resonance for a capacitor C, inductance L and resistance R. Now the value of resistance is halved keeping all other...
JEE MainPhysicsMedium
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QJEE MAIN 2024
A capacitor is made of a flat plate of area A and a second plate having a stair-like structure as shown in figure. If the...
JEE MainPhysicsMedium
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QJEE MAIN 2024
A solid sphere and a hollow cylinder roll up without slipping on same inclined plane with same initial speed v . The sphere and the...
JEE MainPhysicsMedium
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QJEE MAIN 2024
Three urns A, B and C contain 7 red, 5 black; 5 red, 7 black and 6 red, 6 black balls, respectively. One of the...
JEE MainMathematicsEasy
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QJEE MAIN 2024
Let d be the distance of the point of intersection of the lines x+63=y2=z+11 and x-74=y-93=z-42 from the point (7,8,9). Then d2+6 is equal to...
JEE MainMathematicsHard
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QJEE MAIN
Two planets A and B having masses m1 and m2 move around the sun in circular orbits of $r_1$ and $\mathrm{r}_2$ radii respectively. If angular...
JEE MainPhysicsMedium
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QJEE MAIN 2024
A sphere of relative density σ and diameter D has concentric cavity of diameter d. The ratio of D/d, if it just floats on water...
JEE MainPhysicsHard
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QJEE MAIN 2024
Let $f: \mathrm{R} \rightarrow \mathrm{R}$ be a function given by $$ f(x)=\left\{\begin{array}{cl} \frac{1-\cos 2 x}{x^2} & , x<0 \\ \alpha & , x=0, \text {...
JEE MainMathematicsEasy
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QJEE MAIN 2024
A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is 1.42eV. The wavelength of light emitted from the LED is:
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