 ## A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N. The friction between….

A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N. The friction between wall and body is 0.3. Then the frictional force is equal to

## Which of the following molecules would be expected to be planar?(1) NH3(2) SF4(3) XeF4(4) IC….

Which of the following molecules would be expected to be planar? (1) NH3 (2) SF4 (3) XeF4 (4) ICl–4

## The number of common tangents that can be drawn to the circles x2 + y2 – 4x – 6y – 3 = 0 and x2 + y2….

The number of common tangents that can be drawn to the circles x2 + y2 – 4x – 6y – 3 = 0 and x2 + y2 + 2x + 2y + 1 = 0 is :

## If ∫ 1 + sin x   f x  dx = 2 3 1 + sin x 3 / 2 + c then f  x ….

If ∫ 1 + sin x   f x  dx = 2 3 1 + sin x 3 / 2 + c then f  x is equal to

## The complex ion which has no ‘d’ -electrons in the central metal atom is….

The complex ion which has no ‘d’ -electrons in the central metal atom is

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## The line x = c cuts the triangle with corners (0, 0), (1, 1) and (9, 1) into two regions. For the ar….

The line x = c cuts the triangle with corners (0, 0), (1, 1) and (9, 1) into two regions. For the area of the two regions to be the same c must be equal to :

## In a Wheatstone’s bridge all the four arms have equal resistance R. If the resistance of the galvano….

In a Wheatstone’s bridge all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R, the equivalent resistance of the combination as seen by the battery is

## Two long coaxial and conducting cylinders of radius a and b are separated by a material of conductiv….

Two long coaxial and conducting cylinders of radius a and b are separated by a material of conductivity  σ  and a constant potential difference V is maintained between them, by a battery. Then the current, per unit length of the cylinder flowing from one cylinder to the other is...

## If a gas is heated at constant pressure then what percentage of total heat supplied is used for doin….

If a gas is heated at constant pressure then what percentage of total heat supplied is used for doing work ? (Given : for gas = 4/3)

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