Jee physics Questions and Answers List

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : For a simple microscope
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LED is constructed from Ga-As-P semiconducting material. The energy gap of this LED is 1.9 eV.
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Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
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The potential energy (U) of a diatomic molecule is a function dependent on r (interatomic distance) as U=α/r^(10)-β/r^5-3
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A monoatomic gas of mass 4.0 u is kept in an insulated container. Container is moving with velocity 30 m/s.
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512 identical drops of mercury are charged to a potential of 2V each.
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The same size images are formed by a convex lens when the object is placed at 20 cm or at10 cm from the lens.
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In the given circuit of potentiometer, the potential difference E across AB (10m length) is larger than E1 and E2 as well.
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In a certain thermodynamical process, the pressure of a gas depends on its volume as kV^3.
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The electric field in a region is given Vector E=(3/5E0 i+4/5E0 j)N/C.The ratio of flux of reported
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​ In an octagon ABCDEFGH of equal side, what is the sum of  vector{AB}+vector{AC}+vector{AD}+vector{AE}+vector{AF}+vector{AG}+vector{AH'}
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Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
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Two radioactive substances X and Y originally have N1 and N2 nuclei respectively.
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Magnetic fields at two points on the axis of a circular coil at a distance of 0.05 m and 0.2 m from the centre are in the ratio 8 : 1.
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In a Young's double slit experiment two slits are separated by 2 mm and the screen is placed one meter away.
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A particle is moving with uniform speed along the circumference of a circle of radius R under the action of a central fictitious force F
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Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
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​ A diatomic gas, having Cp= 7/2{R}  and Cv = 5/2{R}, is heated at constant pressure. The ratio dU : dQ : dW : ​
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The normal density of a material is ρ and its bulk modulus of elasticity is K.
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Match List-I with List-II : List-I List-II (a) h (Planck's constant)
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