SureDen
Question 1: Show that the sum of (m + n)th and (m – n)th terms of an A.P. is equal to twice the mth term.
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A compound MpXq has cubic close packing (ccp) arrangement of X. Its unit cell structure is shown below
The empirical formula of the compound, is
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In figure are shown charges q1 = + 2 × 10–8 C and q2 = – 0.4 × 10–8 C. A charge q3 = 0.2 × 10–8 C in moved along the arc of a circle
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What is the effective force between two charges as compared to force between same two charges placed at same distance.
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From the graph between current i & voltage V shown, identity the portion corresponding to negative resistance[CBSE PMT 1997]
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Current flows due north in a horizontal transmission line. Magnetic field at a point P vertically above it directed
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An equilateral triangle of side 'a' carries a current i then find out the magnetic field at point P which is vertex of triangle
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Find magnetic field at centre O in each of each of the following figure
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Figure shows the cress sectional view of the hollow cylindrical conductor with inner radius 'R' and outer radius '2R', cylinder carrying uniformly distributed current along it's axis. The magnetic induction at point 'P' at a distance 3R/2
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A conductor PQRSTU, each side of length L, bent as shown in the figure, carries a current i and is placed in a uniform magnetic induction B directed parallel to the positive Y-axis. The force experience by the wire and its direction are
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An equilateral triangle of side 'a' carries a current i then find out the magnetic field at point P which is vertex of triangle
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An ideal gas is taken around ABCA as shown in the above P-V diagram. The work done during a cycle is
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Four curves A, B, C and D are drawn in the adjoining figure for a given amount of gas. The curves which represent adiabatic and isothermal changes are
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At the top of a mountain a thermometer reads 7°C and a barometer reads 70 cm of Hg. At the bottom of the mountain these read 27°C and 76 cm of Hg respectively. Comparison of density of air at the top with that of bottom is
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A sphere of mass 0.1 kg is attached to a cord of 1m length. Starting from the height of its point of suspension this sphere hits a block of same mass at rest on a frictionless table, If the impact is elastic, then the kinetic energy of the block after the collision is &
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Six identical balls are lined in a straight groove made on a horizontal frictionless surface as shown. Two similar balls each moving with a velocity v collide with the row of 6 balls from left. What will happen
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Two carts on horizontal straight rails are pushed apart by an explosion of a powder charge Q placed between the carts. Suppose the coefficients of friction between the carts and rails are identical. If the 200 kg cart travels a distance of 36 metres and stops, the di
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A block of mass 2kg is released from A on the track that is one quadrant of a circle of radius 1m. It slides down the track and reaches B with a speed of 4ms-1 and finally stops at C at a distance of 3m from B. The work
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A 10 kg mass moves along x-axis. Its acceleration as a function of its position is shown in the figure. What is the total work done on the mass by the force as the mass moves from x=0 to x=8 cm
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AB is a wire of uniform resistance. The galvanometer G shows no current when the length AC = 20 cm and CB=80cm . The resistance R is equal to
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Resistances of 6 ohm each are connected in the manner shown in adjoining figure. With the current 0.5 ampere as shown in figure, the potential difference VP – VQ is
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