List of practice Questions

Pressure in non uniform cross section wire will be least at
For a permanent magnet, properties of material should be
A real object is on principle axis of concave mirror of focal length 2m object distance from pole is 8m. Find image distance.
Velocity is given by v = 4t(1 - 2t) then find time at which velocity is maximum
Find pressure on swimmer at a depth of 10 m in water
If compressibility of material is 4 × 10-5 per atm, pressure is 100 atm and volume 100 cm3 find a ΔV =
Find a capacitance
Electric circuit
Two parallel wire carries current I1 and I2 are separated by distance d. Force per unit length of wire is F. Then :
A missile is fired at 30° angle from horizontal with 90 m/s find time of flight
For uranium nucleus. Find relation between mass and volume
A particle is thrown vertically up with speed 6m/s find maximum height achieved
If current in inductor of 5 mH varying as I = t2.e-2t then find time after which voltage drop across inductor become zero.
In YDSE S1 and S2 has intensity I and 9I. Find difference in intensity b/w point which has phase difference of π/2 and π.
In YDSE if white light is used then.
If point charges Q1 = 2 × 10-7 C and Q2 = 3×10-7 C are at 30 cm separation. Find electrostatic force them.
If in isothermal process Δw work is done by gas, then choose incorrect
If a machine perform 4000 J output work and 1000 J is inside loss due to friction find efficiency = ?
Why only As3+ gets precipitated as As2S3 and not Zn2+ as ZnS when H2S passed through an acidic solution containing As3+ and Zn2+ ?
Osmotic pressure of 0.4% urea solution is 1.64 atm and that of 3.42% cane sugar is 2.46 atm. When the above two solutions are mixed, the osmotic pressure of the resulting solution is :
For an isothermal reversible expansion process, the value of q can be calculated by the expression
Chemical Reaction P is
Dimension of force is
Which is wrong dimension ?
A vernier least count 0.1 mm percentage error in volume of cube of side 30 mm.
The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1, hence the energy of fourth Bohr orbit would be :