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Recent questions tagged physics
Questions
Two bulbs of (40 W, 200 V), and (100 W, 200 V). Then correct relation for their resistance :
neet
physics
past papers
2000
40
asked
Jul 20, 2018
by
pady_1
1
answer
A car battery of emf 12 V and internal resistance $5\times10^{-2}\Omega$, receives a current of 60 Å from external source, then terminal voltage of battery is :
neet
physics
past papers
2000
39
asked
Jul 20, 2018
by
pady_1
1
answer
Who evaluated the mass of electron indirectly with help of charge :
neet
physics
past papers
2000
38
asked
Jul 20, 2018
by
pady_1
1
answer
Nuclear – Fission is best explained by :
neet
physics
past papers
2000
37
asked
Jul 20, 2018
by
pady_1
1
answer
Two spherical bob of masses $M_A$ and $M_B$ are hung vertically from two strings of length $l_A$ and $l_B$ respectively. They are excuting SHM with frequency relation $f_A$ =$2f_B$ , Then :
neet
physics
past papers
2000
36
asked
Jul 20, 2018
by
pady_1
1
answer
For the adjoining diagram, a triangular lamina is shown the correct relation between $I_1$, $I_2$ & $I_3$ is (I – moment of inertia)
neet
physics
past papers
2000
35
asked
Jul 20, 2018
by
pady_1
1
answer
If $\overrightarrow{F}$ = $(60 \hat{i} + 15 \hat{j} – 3 \hat{k} ) N $ and $\overrightarrow{V }= (2 \hat{i} – 4\hat{j} + 5 \hat{k} ) m/s$, then instantaneous power is :
neet
physics
past papers
2000
34
asked
Jul 20, 2018
by
pady_1
0
answers
A string is cut into three parts, having fundamental frequencies $n_1$, $n_2$ and $n_3$ respectively. Then original fundamental frequency 'n' related by the expression as :
neet
physics
past papers
2000
27
asked
Jul 20, 2018
by
pady_1
1
answer
Two stationary sources each emitting waves of wave length $\lambda$. An observer moves from one source to other with velocity u. Then number of beats heared by him :
neet
physics
past papers
2000
26
asked
Jul 20, 2018
by
pady_1
1
answer
The value of quality factor is :
neet
physics
past papers
2000
25
asked
Jul 20, 2018
by
pady_1
1
answer
A charge having q/m equal to $10^8$ c/kg and with velocity $3 × 10^5$ m/s enters into a uniform magnetic field $B = 0.3$ tesla at an angle $30^{\circ}$ with direction of field. Then radius of curvature will be :
neet
physics
past papers
2000
24
asked
Jul 20, 2018
by
pady_1
1
answer
For adjoining fig., The magnetic field at point, 'P' will be : 5A P 2.5A 2.5 m 5m
neet
physics
past papers
2000
23
asked
Jul 20, 2018
by
pady_1
1
answer
A charge Q the electric flux passed through all the six faces of the cube is :
neet
physics
past papers
2000
22
asked
Jul 20, 2018
by
pady_1
1
answer
By photo electric effect, Einstein proved :
neet
physics
past papers
2000
14
asked
Jul 20, 2018
by
pady_1
0
answers
For a plane convex lenx $(\mu = 1.5)$ has radius of curvature 10 cm. It is silvered on its plane surface. Find focal length after silvering :
neet
physics
past papers
2000
13
asked
Jul 20, 2018
by
pady_1
1
answer
Gravitational force is required for :
neet
physics
past papers
2000
12
asked
Jul 20, 2018
by
pady_1
1
answer
Rainbow is formed due to :
neet
physics
past papers
2000
11
asked
Jul 20, 2018
by
pady_1
1
answer
A body of weight 72 N moves from the surface of earth at a height half of the radius of the earth, then gravitational force exerted on it will be :
neet
physics
past papers
2000
10
asked
Jul 20, 2018
by
pady_1
2
answers
A man is slipping on a frictionless inclined plane & a bag falls down from the same height. Then the speed of both is related as :
neet
physics
past papers
2000
9
asked
Jul 20, 2018
by
pady_1
1
answer
For the given reaction, the particle X is : ${6^C}^{11}\rightarrow{5^B}^{11}+\beta^+{+}X$
neet
physics
past papers
2000
8
asked
Jul 20, 2018
by
pady_1
1
answer
A mass is performing vertical circular motion (see figure).If The average velocity of the particle is increased, then at which point the string will break :
neet
physics
past papers
2000
7
asked
Jul 20, 2018
by
pady_1
1
answer
Two projectiles of same mass and with same velocity are thrown at an angle 60º & 30º with the horizontal, then which quantity will remain same :
neet
physics
past papers
2000
6
asked
Jul 20, 2018
by
pady_1
1
answer
A bubble in glass slab $(\mu = 1.5)$ when viewed from one side appears at 5 cm and 2 cm from other side, then thickness of slab is :
neet
physics
past papers
2000
49
asked
Jul 20, 2018
by
pady_1
1
answer
When an electron do transition from n = 4 to n = 2, then emitted line in spectrum will be :
neet
physics
past papers
2000
48
asked
Jul 20, 2018
by
pady_1
1
answer
The cations and anions are arranged in alternate form in :
neet
physics
past papers
2000
47
asked
Jul 20, 2018
by
pady_1
1
answer
The life span of atomic hydrogen is :
neet
physics
past papers
2000
46
asked
Jul 20, 2018
by
pady_1
2
answers
The correct relation for $\alpha$ , $\beta$ for a transistor :
neet
physics
past papers
2000
45
asked
Jul 20, 2018
by
pady_1
1
answer
For a planet having mass equal to mass of the earth but radius is one fourth of radius of the earth. Then escape velocity for this planet will be
neet
physics
past papers
2000
44
asked
Jul 20, 2018
by
pady_1
1
answer
The potentiometer is best for measuring voltage, as :
neet
physics
past papers
2000
43
asked
Jul 20, 2018
by
pady_1
2
answers
A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be :
neet
physics
past papers
2000
42
asked
Jul 20, 2018
by
pady_1
2
answers
According to the Faraday Law of electrolysis, the mass deposited at electrode proportional to :
neet
physics
past papers
2000
41
asked
Jul 20, 2018
by
pady_1
1
answer
The bob of simple pendulum having length l, is displaced from mean position to an angular position $\theta$ with respect to vertical. If it is released, then velocity of bob at lowest position :
neet
physics
past papers
2000
33
asked
Jul 20, 2018
by
pady_1
1
answer
Given Truth table is correct for :
neet
physics
past papers
2000
32
asked
Jul 20, 2018
by
pady_1
1
answer
From the following diode circuit. Which diode in forward biased condition :
neet
physics
past papers
2000
31
asked
Jul 20, 2018
by
pady_1
0
answers
The ratio (W/Q) for a carnot – engine is $\frac{1}{6}$ ,Now the temp. of sink is reduced by 62ºC, then this ratio becomes twice, therefore the initial temp. of the sink and source are respectively :
neet
physics
past papers
2000
30
asked
Jul 20, 2018
by
pady_1
1
answer
The relation between $\lambda$ and $T_\frac{1}{2}$ is : ( $T_\frac{1}{2}$= half life , $\lambda\rightarrow decay constant$ )
neet
physics
past papers
2000
29
asked
Jul 20, 2018
by
pady_1
1
answer
The equations of two waves given as $X=acos(\omega t+\delta)$ and $X=acos(\omega t+ \alpha)$, Where $\delta=\alpha+\frac{\pi}{2}$, then resultant wave represent :
neet
physics
past papers
2000
28
asked
Jul 20, 2018
by
pady_1
0
answers
Motion of a particle is given by equation $S=({3t^3}+{7t^2}+14 t+8)m$ The value of acceleration of the particle at t = 1 sec. is :
neet
physics
past papers
2000
21
asked
Jul 20, 2018
by
pady_1
1
answer
The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river with shortest will possible path in 15 min. Then the velocity of river stream is :
neet
physics
past papers
2000
20
asked
Jul 20, 2018
by
pady_1
1
answer
Electric field atcentre O of semicircle of radius 'a' having linear charge density $\lambda$ given is given by O a
neet
physics
past papers
2000
19
asked
Jul 20, 2018
by
pady_1
1
answer
The frequency order of for $\gamma$- rays b, X – rays a, UV – rays(c):
neet
physics
past papers
2000
18
asked
Jul 20, 2018
by
pady_1
1
answer
To find out degree of freedom, the correct expression is :
neet
physics
past papers
2000
17
asked
Jul 20, 2018
by
pady_1
1
answer
For a hollow cylinder & a solid cylinder rolling without slipping on an inclined plane, then which of these reaches earlier on the ground :
neet
physics
past papers
2000
16
asked
Jul 20, 2018
by
pady_1
0
answers
Maximum frequency of emission is obtained for the transition :
neet
physics
past papers
2000
15
asked
Jul 20, 2018
by
pady_1
0
answers
A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel with it. Then energy stored in each capacitor is :
neet
physics
past papers
2000
5
asked
Jul 20, 2018
by
pady_1
1
answer
Calculate the net resistance of the circuit between A and B :
neet
physics
past papers
2000
4
asked
Jul 20, 2018
by
pady_1
1
answer
A mass of 1kg is thrown up with a velocity of 100 m/s. After 5 seconds, it explodes into two parts. One part of mass 400 g comes down with a velocity 25 m/s Calculate the velocity of other part :
neet
physics
past papers
2000
3
asked
Jul 20, 2018
by
pady_1
1
answer
A body of mass 3 kg hits a wall at an angle of $60^{\circ}$ & returns at the same angle. The impact time was 0.2 s. Calculate the force exerted on the wall :
neet
physics
past papers
2000
2
asked
Jul 20, 2018
by
pady_1
1
answer
Two masses as shown are suspended from a massless pulley. Calculate the acceleration of the system when masses are left free :
neet
physics
past papers
2000
1
asked
Jul 20, 2018
by
pady_1
1
answer
A charged particle enters a magnetic field at right angles to the magnetic
physics
asked
Jul 20, 2018
by
charukhachane712
1
answer
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