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Recent questions tagged past paper
Questions
Two cars moving in opposite directions approach each other with speed of 22 m/ s and 16.5 m/s respectively. The driver of the first car blows a horn having a frequency 400 Hz . The frequency heard by the driver of the second car is [velocity of sound 340 m/s]
neet
2017
physics
past paper
t1
q20
asked
Oct 10, 2017
by
meena.p
0
answers
A physical quantity of the dimensions of length that can be formed out of c, G and $\large\frac{e^2}{4 \pi \in_0}$ is [c is velocity of light, G is universal constant of gravitation and e is charge ] :
neet
2017
physics
past paper
t1
q19
asked
Oct 10, 2017
by
meena.p
0
answers
O is the centre of an equilateral triangle ABC $F_1, F_2, F_3$ are three forces acting along the sides AB, BC and AC as shown in fig.What should be the magnitude of $F_3$ so that total torque about O is zero :
neet
1998
physics
past paper
t1
q27
asked
Oct 10, 2017
by
priyanka.c
1
answer
The photo electric threshold wave length of silver is $3250 \times 10^{-10}\;m$ . The velocity of the electrons ejected from a silver surface by ultraviolet light of wavelength $2536 \times 10^{-10}\;m$ is : (Given $h=4.14 \times 10^{-10} \;eVs$ and $c= 3 \times 10^{8} \;ms^{-1})$
neet
2017
physics
past paper
t1
q18
asked
Oct 10, 2017
by
meena.p
0
answers
A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :
neet
2017
physics
past paper
t1
q17
asked
Oct 10, 2017
by
meena.p
0
answers
Thermodynamic processes are indicated in the following diagram.
neet
2017
physics
past paper
t1
q16
asked
Oct 10, 2017
by
meena.p
0
answers
A particle executes linear simple harmonic motion with an amplitude of 3 cm. When the particle is at 2 cm from the mean position, the magnitude of its velocity is equal to that of its acceleration.- Then its time period in seconds is
neet
2017
physics
past paper
t1
q15
asked
Oct 10, 2017
by
meena.p
0
answers
Young's double slit experiment is first performed in air and then in a medium other than air. It is found that 8th bright fringe in the medium lies where 5th dark fringe lies in air. The refractive index of the medium is nearly
neet
2017
physics
past paper
t1
q14
asked
Oct 10, 2017
by
meena.p
0
answers
The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is
neet
2017
physics
past paper
t1
q13
asked
Oct 10, 2017
by
meena.p
1
answer
The diagrams below, shown, regions of equipotentials : A positive charge is moved from A to B in each diagram.
neet
2017
physics
past paper
t1
q12
asked
Oct 10, 2017
by
meena.p
0
answers
Two rods A and B of different materials are welded together as shown in figure. Their thermal conductivities are $K_1$ and $K_2$. The thermal conductivity of the composite rod will be
neet
2017
physics
past paper
t1
q11
asked
Oct 10, 2017
by
meena.p
0
answers
In hot wire Ammeter due to flowing of current temperature of wire is increased by $5^{\circ} C$. If value of current is doubled,then increases in temperature will be :
neet
1998
physics
past paper
t1
q36
asked
Oct 9, 2017
by
priyanka.c
0
answers
A standing wave having 3 nodes and 2 antinodes is formed between 1.21Å distance then the wavelength is :
neet
1998
physics
past paper
t1
q35
asked
Oct 9, 2017
by
priyanka.c
0
answers
If the frequency of a spring is n after suspending mass M, now 4M mass is suspected from spring then the frequency will be :
neet
1998
physics
past paper
t1
q34
asked
Oct 9, 2017
by
priyanka.c
0
answers
For the diffraction from a crystal with $\lambda = 1 Å$ and Bragg's angle $\theta = 60^{\circ}$, then for the second order diffraction $'d'$ will be
neet
1998
physics
past paper
t1
q33
asked
Oct 9, 2017
by
priyanka.c
0
answers
Two long parallel wires are at a distance of 1m. If both of them carry one ampere of current in same direction, then the force of attraction on unit length of the wire will be :
neet
1998
physics
past paper
t1
q32
asked
Oct 9, 2017
by
priyanka.c
1
answer
A ball is dropped from a height of 5 m, if it rebound upto height of 1.8 m, then the ratio of velocities of the ball after and before rebound is :
neet
1998
physics
past paper
t1
q31
asked
Oct 9, 2017
by
priyanka.c
0
answers
When three identical bulbs are connected in series, the consumed power is 10W. If they are now connected in parallel then the consumed power will be :
neet
1998
physics
past paper
t1
q30
asked
Oct 9, 2017
by
priyanka.c
0
answers
A gas of volume changes 2 litre to 10 litre at Constant Temperature 300K, then the change in internal energy will be :
neet
1998
physics
past paper
t1
q29
asked
Oct 9, 2017
by
priyanka.c
1
answer
When volume change from V to 2V at Constant Pressure (P) then the change in internal energy will be :
neet
1998
physics
past paper
t1
q28
asked
Oct 9, 2017
by
priyanka.c
0
answers
For a Rocket propulsion velocity of exhaust gases relative to rocket is $2\; km/s$. If mass of rocket system is 1000 kg, then the rate of fuel consumption for a rocket to rise up with acceleration $4.9\; m/s^2$ will be :
neet
1998
physics
past paper
t1
q26
asked
Oct 9, 2017
by
priyanka.c
1
answer
If a ladder is not in balance against a smooth vertical wall, then it can be made in balance by :
neet
1998
physics
past paper
t1
q25
asked
Oct 9, 2017
by
priyanka.c
0
answers
Resistance of a Galvanometer coil is $8 \Omega$ and $2 \Omega$ Shunt resistance is connected with it. If main current is $1\; A $ then the current flow through $2 \Omega $ resistance will be :
neet
1998
physics
past paper
t1
q24
asked
Oct 9, 2017
by
priyanka.c
0
answers
Two coil have a mutual inductance 0.005 H. The current changes in first coil according to equation $I = I_0 \sin \omega t $ where $I_0 = 2A$ and $\omega = 100 \pi\; rad/sec$. The maximum value of emf in second coil is
neet
1998
physics
past paper
t1
q23
asked
Oct 9, 2017
by
priyanka.c
1
answer
If time of mean position from amplitude (extreme) position is 6 s. Then the frequency of SHM will be :
neet
1998
physics
past paper
t1
q22
asked
Oct 9, 2017
by
priyanka.c
0
answers
Work function of a meta surface is $\phi = 1.5 \;eV$. If a light of wavelength $5000Å$ falls on it then the maximum K.E of ejection electron will be -
neet
1998
physics
past paper
t1
q21
asked
Oct 9, 2017
by
priyanka.c
0
answers
$10^{5}$ coloumb liberated 1 gm silver (Ag). If now charge is doubled then the amount of liberated Ag will be :
neet
1998
physics
past paper
t1
q20
asked
Oct 9, 2017
by
priyanka.c
0
answers
Light enters at an angle of incidence in a transparent rod of refractive index n. For what value of the refractive index of the material of the rod, the light once entered into it will not leave it through its lateral face whatsoever be the value of angle of incidence:
neet
1998
physics
past paper
t1
q19
asked
Oct 9, 2017
by
priyanka.c
0
answers
One part of a device is connected with the negative terminal of a battery and another part is connected with the positive terminal of a battery. If their ends now altered, current does not flow in circuit, then device will be
neet
1998
physics
past paper
t1
q18
asked
Oct 9, 2017
by
priyanka.c
0
answers
A small ball is suspected from a thread. It is lifted up with an acceleration $4.9 ms^{-2}$ and lowered with an acceleration $4.9 ms^{-2}$ then the ratio of tensions in the thread in both cases will be :
neet
1998
physics
past paper
t1
q17
asked
Oct 9, 2017
by
priyanka.c
0
answers
Two identical balls A and B are moving with velocity $+0.5 ms^{-1}$ and $-0.3 ms^{-1}$ respectively. They collide head on elastically then their velocities after collision will be :
neet
1998
physics
past paper
t1
q16
asked
Oct 9, 2017
by
priyanka.c
0
answers
The speed of a boat is 5 km/hr is still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of river water is :
neet
1998
physics
past paper
t1
q15
asked
Oct 9, 2017
by
priyanka.c
0
answers
A coil of one loop is made from a wore of length L and thereafter a coil of two loops is made from same wire, then the ration of magnetic field at the centre of coils will be:
neet
1998
physics
past paper
t1
q14
asked
Oct 9, 2017
by
priyanka.c
0
answers
If the light of wavelength $\lambda$ is incident on metal surface, the ejected fastest electron has speed v. If the wavelength i changed to $\frac{3 \lambda}{4}$, the speed of the fastest emitted electron will be:
neet
1998
physics
past paper
t1
q13
asked
Oct 9, 2017
by
priyanka.c
1
answer
A particle of mass m is tied to a string of length L and whirled into a horizontal plan. If tension in the string is T then the speed of the particle will be :
neet
1998
physics
past paper
t1
q12
asked
Oct 8, 2017
by
priyanka.c
0
answers
Half life period of two elements are 40 minute and 20 minute respectively, then after 80 minute ratio of the remaining nuclei will be (Initially both have equal active nuclei) :
neet
1998
physics
past paper
t1
q11
asked
Oct 8, 2017
by
priyanka.c
0
answers
If Force $F = 500 - 100 t$, then function of impulse with time will be :
neet
1998
physics
past paper
t1
q10
asked
Oct 8, 2017
by
priyanka.c
1
answer
If $x = 3 - 4t^2 + t^3$, then work done in first $4s$ will be (Mass of the particle is 3 gram) :
neet
1998
physics
past paper
t1
q9
asked
Oct 8, 2017
by
priyanka.c
1
answer
A circular ring of mass M and radius R is rotating about its axis with constant angular velocity $w$. Two particle each of mass $m$ are attached gently to the opposite ends of a diameter of the ting. The angular velocity of the ring will now become :
neet
1998
physics
past paper
t1
q8
asked
Oct 8, 2017
by
priyanka.c
1
answer
For protecting a magnetic needle it should be placed :
neet
1998
physics
past paper
t1
q7
asked
Oct 8, 2017
by
priyanka.c
0
answers
Two pendulum suspended from same point having length 2m and 0.5m. If they displaced slightly and released then they will be in same phase, when small pendulum will have completed?
neet
1998
physics
past paper
t1
q6
asked
Oct 8, 2017
by
priyanka.c
1
answer
For a wave $y = y_0 \sin (wt - kx)$, for what value of $\lambda$ is the maximum particle velocity equal to two times the wave velocity :
neet
1998
physics
past paper
t1
q5
asked
Oct 8, 2017
by
priyanka.c
1
answer
Following logic gate is :
neet
1998
physics
past paper
t1
q4
asked
Oct 8, 2017
by
priyanka.c
1
answer
Following table is for which logic gate:
neet
1998
physics
past paper
t1
q3
asked
Oct 8, 2017
by
priyanka.c
1
answer
A hollow sphere of radius 1m is given a positive charge of $10 \mu C$. The electric field at the centre of hollow sphere will be :
neet
1998
physics
past paper
t1
q2
asked
Oct 8, 2017
by
priyanka.c
1
answer
Boron has two isotopes $_5B^{10}$ and $_5B^{11}$. If atomic weight of Boron is 100.81 then ratio of $_5B^{10}$ to $_5B^{11}$ in nature will be :
neet
1998
physics
past paper
t1
q1
asked
Oct 8, 2017
by
priyanka.c
1
answer
Suppose the charge of a proton and an eleckon differ slightly. One of them is - e, the other is $(e + \Delta e)$. If the net of electrostatic force and gravitational force between two hydrogen atoms placed at a distance d much greater than atomic size. apart is zero, then $\Delta_e$ is of the order of [Given mass of hydrogen $m_h= 1.67 \times 10^{27}\;kg]$
neet
2017
physics
past paper
t1
q10
asked
Oct 7, 2017
by
meena.p
0
answers
The x and y coordinates of the particle at any time are $x= 5t - 2t^2$ and $y = 10t$ respectivelv, where r and y are in meters and t in seconds. The acceleration of the particle at $t = 2s$ is
neet
2017
physics
past paper
t1
q9
asked
Oct 7, 2017
by
meena.p
1
answer
Figure shows a circuit that contains three identical resistors with resistance R=9.0 O each, two identical inductors with inductance L=2.0 mH each, and an ideal battery with emf e: 18 V. The current 'i' through the battery just after the switch closed is,.....
neet
2017
physics
past paper
t1
q8
asked
Oct 7, 2017
by
meena.p
1
answer
One end of string of length I is connected to a particle of mass 'nf and the other end is connected to a small peg on a smooth horizontal table. If the particle moves in circle with speed 'u', the net force on the particle (directed towards center) will be ([ represents the tension in the string)
neet
2017
physics
past paper
t1
q7
asked
Oct 7, 2017
by
meena.p
0
answers
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