Physics Quiz 9
1 / 50
If stretching force T of wire increases, then its frequency __________________?
2 / 50
Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________?
3 / 50
Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?
4 / 50
Pair production cannot take place in a vacuum as ________________?
5 / 50
The highest value of escape velocity in solar system is planet____________________?
6 / 50
The direction of propagation of an electromagnetic waves is________________?
7 / 50
All electrical appliances are connected in parallel to each other between the main line and neutral wire to get ______________________?
8 / 50
In scientific notation, numbers are expressed in________________?
9 / 50
One pico stands for_________________?
10 / 50
Which one of the following has the greatest energy gap ?
11 / 50
A wire of uniform area of cross-section A length L and resistance R is cut into two parts. Resistivity of each part _________________?
12 / 50
An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be______________?
13 / 50
The power of a concave lens is_______________?
14 / 50
Rest mass of a photon is________________?
15 / 50
Electromagnetic waves emitted from antenna are________________?
16 / 50
The normal ear is the most sensitive in the frequency range___________________?
17 / 50
The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?
18 / 50
The distance covered by a body in time t starting from rest is__________________?
19 / 50
Slope of velocity time graph is_____________________?
20 / 50
A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is_____________?
21 / 50
Three students measured the length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is a correct record ?
22 / 50
The relation between linear and angular acceleration is______________?
23 / 50
The value of the steady current which when flowing through the same resistor produces heat at the same rate as the mean rate of heat produced by the alternating current is__________________?
24 / 50
p-n junction when reversed biased acts as a_______________?
25 / 50
Torque acting on a body determines_______________?
26 / 50
During long jump, athlete runs before taking the jump. By doing so he__________________?
27 / 50
The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is________________?
28 / 50
The ration stress to strain in youngs modulus of the material then tension is__________________?
29 / 50
Dimension of pressure is__________________?
30 / 50
The area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine_______________?
31 / 50
Which one of the following is nearly monochromatic light ?
32 / 50
Moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be_______________?
33 / 50
The displacement of SHM is written as X = X`sin?t if the displacement is written by X = X? sont then phase constant will be equal to_______________?
34 / 50
In the nucleus of uranium, the number of neutrons will be _____________?
35 / 50
The band theory of solids explains satisfactorily the nature of_________________?
36 / 50
The simplest type of rectification known as half wave rectification is obtained by____________________?
37 / 50
Very weak magnetic fields are detected by___________________?
38 / 50
Fundamental frequency of stationary waves in open pipe is ______________ times the frequency in closed pipe?
39 / 50
The centripetal acceleration produced in a rotating body is commonly due to change on_________of body?
40 / 50
A photon of wavelength 900nm behaves like a particle of mass______________?
41 / 50
Gravitation force of moon is_________?
42 / 50
Excited atoms return to their ground state in_______________?
43 / 50
The phase of SHM describes________________?
44 / 50
A cyclist cycling around a circular racing track skids because_____________?
45 / 50
A wire having very high value of conductance is said to be____________________?
46 / 50
When light incident normally on thin film the path difference depends upon ________________?
47 / 50
Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________?
48 / 50
Unit vector n^ is along______________?
49 / 50
The number 76.85 is rounded off up to two significant figures as_____________?
50 / 50
The maximum safe limit dose for persons working in a nuclear power station is ________________?
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