Physics Quiz 5
1 / 50
Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is______________?
2 / 50
Reflecting mirrors in laser is used to______________?
3 / 50
The distance between any two consecutive crests or troughs is called____________________?
4 / 50
The electrons in conduction band are free to___________________?
5 / 50
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is_______________?
6 / 50
Bernoulli?s equation is applicable for_________________?
7 / 50
When two protons are brought together_____________________?
8 / 50
In double slit experiment we observe _____________________?
9 / 50
A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?
10 / 50
The velocity of laser light is___________________?
11 / 50
The charge on beta particle is________________?
12 / 50
In normal state of energy the incident high energy photons will be______________?
13 / 50
Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is__________________?
14 / 50
Which one of following band is completely filled in case of conductors ?
15 / 50
Which one is the dimensionally correct equation ?
16 / 50
Which one is the derived quantity in SI units _____________?
17 / 50
It is easier to turn a steering wheel with both hands than with a single hand because______________?
18 / 50
The profile of aeroplane wing which lifts it up is called as_____________?
19 / 50
A lens which converges a beam of parallel rays to a point is called______________?
20 / 50
The__________branch of Physics deals with nuclear particles such as neutrons, protons and nuclear?
21 / 50
There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?
22 / 50
Steradian is the SI unit of________________?
23 / 50
How many main frontiers of fundamental science ?
24 / 50
Why should a resistance be introduced in a circuit in series deliberately ?
25 / 50
If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?
26 / 50
The tides raise the mater in the see roughly in a day___________________?
27 / 50
Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?
28 / 50
The charge on an electron was determine by ________________?
29 / 50
The efficiency of the Carnot engine working between 150?C and 50?C is__________?
30 / 50
An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?
31 / 50
The relation between the escape velocity V esc and orbital speed Vo is given by________________?
32 / 50
The SI unit of force constant is identical with that of__________________?
33 / 50
Stopping potential for a metal surface in case of photoelectric emission depends on_____________?
34 / 50
Flight of a rocket in the space is an example of______________________?
35 / 50
A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?
36 / 50
If a body of mass 10 kg is allowed to fall freely, its weight becomes______________?
37 / 50
When A.C current passes through a capacitor then the current relationship will be_______________?
38 / 50
Which one is not correct for a vector A= 2i+2j+3k ?
39 / 50
The size of one degree of Celsius is equal to_________________?
40 / 50
Joule Thomson effect is based upon __________ ?
41 / 50
Increase in velocity of sound in the air for 1?C rise in temperature is_________________?
42 / 50
A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference ?
43 / 50
Which equation is not dimensionally correct ?
44 / 50
The length of the second pendulum is_________________?
45 / 50
Terminal velocity of the body is directly proportional to the_______________?
46 / 50
A transmitting station emits radio waves of wavelength ? at power P. If h is Planck?s constant & c the speed of light what is the rate of emission of photons ?
47 / 50
A particle having the mass of an electron and the charge of a proton is called a______________?
48 / 50
The dimension of force is____________________?
49 / 50
The most suitable unit for expressing nuclear radius is_______?
50 / 50
The uncertainty in momentum & position is due to its_____________?
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