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Recent questions tagged physics
Questions
Does drift velocity vary with magnitude of current through conductor?
physics
asked
Jul 23, 2018
by
mamatakumarineupane
1
answer
Two wires of copper and manganin have same resistance .which is thicker and
physics
asked
Jul 23, 2018
by
mamatakumarineupane
1
answer
A beam of light consisting of two wavelength 6300A °and lambdaA° is used
physics
asked
Jul 23, 2018
by
sunita0606berwal
1
answer
3particles each of mass m are moving on circular path due to their mutual i
physics
asked
Jul 23, 2018
by
sheoransavoy
1
answer
A deuteron is bombarded on $_{8}O^{16}$ nucleus then $\alpha$-particle is emitted then product nucleus is -
neet
physics
past papers
2002
50
asked
Jul 23, 2018
by
pady_1
2
answers
A sample of radioactive element containing $4 \times10^{16}$ active nuclei. Half life of element is 10 days, then number of decayed nuclei after 30 days : -
neet
physics
past papers
2002
49
asked
Jul 23, 2018
by
pady_1
2
answers
The velocity of electromagnetic wave is parallel to : -
neet
physics
past papers
2002
48
asked
Jul 23, 2018
by
pady_1
1
answer
Two bar magnets having same geometry with magnetic moments M and 2M, are firstly placed in such a way that their similer poles are same side then its time period of osccilation is $T_1$ . Now the polarity of one of the magnet is reversed then time period of osccilation is $T_2$ , then : -
neet
physics
past papers
2002
47
asked
Jul 23, 2018
by
pady_1
0
answers
A charge 'q' moves in a region where electric field and magnetic field both exist, then force on it is : -
neet
physics
past papers
2002
46
asked
Jul 23, 2018
by
pady_1
0
answers
The magnetic field of given length of wire for single turn coil at its centre is 'B' then its value for two turns coil for the same wire is : -
neet
physics
past papers
2002
45
asked
Jul 23, 2018
by
pady_1
1
answer
For a series LCR circuit the power loss at resonance is : -
neet
physics
past papers
2002
38
asked
Jul 23, 2018
by
pady_1
2
answers
Specific resistance of a conductor increases with :
neet
physics
past papers
2002
37
asked
Jul 23, 2018
by
pady_1
1
answer
For the given circuit of P-N junction diode which is correct : ->
neet
physics
past papers
2002
36
asked
Jul 23, 2018
by
pady_1
1
answer
The given truth table is for which logic gate : -
neet
physics
past papers
2002
35
asked
Jul 23, 2018
by
pady_1
1
answer
In a PN junction : -
neet
physics
past papers
2002
34
asked
Jul 23, 2018
by
pady_1
0
answers
A whistle revolves in a circle with angular speed $\omega$ = 20 rad/sec using a string of length 50 cm. If the frequency of sound from the whistle is 385 Hz, then what is the minimum frequency heard by an observer which is far away from the centre : - ($V_{sound }= 340 m/s$)
neet
physics
past papers
2002
33
asked
Jul 23, 2018
by
pady_1
1
answer
A block of mass 10 kg placed on rough horizontal surface having coefficient of friction µ = 0.5, if a horizontal force of 100 N acting on it nd then acceleration of the block will be : - ss
neet
physics
past papers
2002
26
asked
Jul 23, 2018
by
pady_1
2
answers
A point P consider at contact point of a wheel on ground which rolls on ground without sliping then value of displacement of point P when wheel completes half of rotation (If radius of wheel is 1m) : -
neet
physics
past papers
2002
25
asked
Jul 23, 2018
by
pady_1
1
answer
A body of mass m is placed on earth surface which is taken from earth surface to a height of h = 3R then change in gravitational potential energy is : -
neet
physics
past papers
2002
24
asked
Jul 23, 2018
by
pady_1
1
answer
An object of mass 3kg is at rest. Now a force of F = 6t 2 i + 4t j is applied on the object then velocity of object at t = 3 second is : -
neet
physics
past papers
2002
23
asked
Jul 23, 2018
by
pady_1
1
answer
Number of atom per unit cell in B.C.C. : -
neet
physics
past papers
2002
22
asked
Jul 23, 2018
by
pady_1
1
answer
Unit of Stefan's constant is : -
neet
physics
past papers
2002
21
asked
Jul 23, 2018
by
pady_1
1
answer
The efficiency of carnot engine is 50% and temperature of sink is 500K. If temperature of source is kept constant and its efficiency raised to 60%, then the required temperature of the sink will be : -
neet
physics
past papers
2002
20
asked
Jul 23, 2018
by
pady_1
1
answer
A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force 'F' is applied at height 'h' from the lowest point. For the maximum, acceleration of centre of mass, which is correct : -
neet
physics
past papers
2002
13
asked
Jul 23, 2018
by
pady_1
1
answer
Which of the following is not the property of cathode rays : -
neet
physics
past papers
2002
12
asked
Jul 23, 2018
by
pady_1
1
answer
What is the cause of “Green house effect” : -
neet
physics
past papers
2002
11
asked
Jul 23, 2018
by
pady_1
1
answer
When ultraviolet rays incident on metal plate then photoelectric effect does not occur, it occurs by incidence of : -
neet
physics
past papers
2002
10
asked
Jul 23, 2018
by
pady_1
1
answer
If particles are moving with same velocity, then De-Broglie wavelength is maximum for : -
neet
physics
past papers
2002
9
asked
Jul 23, 2018
by
pady_1
1
answer
Which is having minimum wavelength : -
neet
physics
past papers
2002
8
asked
Jul 23, 2018
by
pady_1
1
answer
A disc is rotating with angular speed $\omega$. If a child sits on it, what is conserved : -
neet
physics
past papers
2002
7
asked
Jul 23, 2018
by
pady_1
1
answer
Displacement between max. P.E. position and max. K.E. position for a particle excuting simple harmonic motion is : -
neet
physics
past papers
2002
6
asked
Jul 23, 2018
by
pady_1
1
answer
Which of the following are suitable for the fusion process : -
neet
physics
past papers
2002
44
asked
Jul 23, 2018
by
pady_1
0
answers
Identical charges (–q) are placed at each corner of a cube of side 'b' then electrical potential energy of charge (+q) which is placed at centre of cube will be
neet
physics
past papers
2002
43
asked
Jul 23, 2018
by
pady_1
1
answer
A capacitor of capacity $C_1$ charged upto V volt and then connected to an uncharged capacitor $C_2$. Then final P.D. across each will be
neet
physics
past papers
2002
42
asked
Jul 23, 2018
by
pady_1
0
answers
To convert a galvanometer into a voltmeter one should connect a : -
neet
physics
past papers
2002
41
asked
Jul 23, 2018
by
pady_1
2
answers
For a cell terminal P.D. is 2.2V when circuit is open and reduces to 1.8V when cell is connected to a resistance of R = 5$\Omega$. Determine internal resistance of cell (r) is then : -
neet
physics
past papers
2002
40
asked
Jul 23, 2018
by
pady_1
1
answer
Some charge is being given to a conductor. Then its potential : -
neet
physics
past papers
2002
39
asked
Jul 23, 2018
by
pady_1
1
answer
A wave travelling in positive X-direction with A = 0.2 m velocity = 360 m/s and $\lambda$ = 60 m, then correct expression for the wave is : -
neet
physics
past papers
2002
32
asked
Jul 23, 2018
by
pady_1
1
answer
For a transistor $\frac{I_C}{I_E}$ = 0.96, then current gain for common emitter configuration : -
neet
physics
past papers
2002
31
asked
Jul 23, 2018
by
pady_1
1
answer
If kinetic energy of a body is increased by 300% than percentage change in momentum will be
neet
physics
past papers
2002
30
asked
Jul 23, 2018
by
pady_1
1
answer
A rod of length is 3m and its mass acting per unit length is driectly proportional to distance x from one of its end then its centre of gravity from th end will be at : -
neet
physics
past papers
2002
29
asked
Jul 23, 2018
by
pady_1
1
answer
A particle (A) is droped from a height and another particle (B) is projected in horizontal direction with speed of 5 m/s from the same height then correct statement is : -
neet
physics
past papers
2002
28
asked
Jul 23, 2018
by
pady_1
1
answer
A lift of mass 1000 Kg which is moving with acceleration of 1 $\frac{m}{s^2}$ in upward direction, then the tension developed in string which is connected to lift is : -
neet
physics
past papers
2002
27
asked
Jul 23, 2018
by
pady_1
2
answers
Consider two rods of same length and different specific heats ($S_1$, $S_2$), conductivities ($K_1$, $K_2$) a area of cross-sections ($A_1$, $A_2$) and both having temperature $T_1$ and $T_2$ at their ends. If rate of lo of heat due to conduction is equal, then :-
neet
physics
past papers
2002
19
asked
Jul 23, 2018
by
pady_1
1
answer
For a black body at temperature 727ºC, its radiating power is 60 watt and temperature of surrounding is 227ºC. If temperature of black body is changed to 1227ºC then its radiating power will be : -
neet
physics
past papers
2002
18
asked
Jul 23, 2018
by
pady_1
1
answer
Which of the following is best close to an ideal black body : -
neet
physics
past papers
2002
17
asked
Jul 23, 2018
by
pady_1
2
answers
The Wien's displacement law express relation between : -
neet
physics
past papers
2002
16
asked
Jul 23, 2018
by
pady_1
2
answers
A bulb is located on a wall. Its image is to be obtained on a parallel wall with the help of convex lens. If the distance between parallel walls is 'd' then required focal length of lens placed in between the walls is : -
neet
physics
past papers
2002
15
asked
Jul 23, 2018
by
pady_1
1
answer
Diameter of human eye lens is 2 mm. What will be the minimum distance between two points to resolve them, which are situated at a distance of 50 meter from eye. The wavelength of light is 5000 Å :-
neet
physics
past papers
2002
14
asked
Jul 23, 2018
by
pady_1
1
answer
The value of plank's constant is : -
neet
physics
past papers
2002
5
asked
Jul 23, 2018
by
pady_1
1
answer
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