Physics Quiz 5

1 / 50

The charge on an electron was determine by ________________?

2 / 50

Flight of a rocket in the space is an example of______________________?

3 / 50

The SI unit of force constant is identical with that of__________________?

4 / 50

The efficiency of the Carnot engine working between 150?C and 50?C is__________?

5 / 50

Why should a resistance be introduced in a circuit in series deliberately ?

6 / 50

Which one is not correct for a vector A= 2i+2j+3k ?

7 / 50

Steradian is the SI unit of________________?

8 / 50

The most suitable unit for expressing nuclear radius is_______?

9 / 50

The dimension of force is____________________?

10 / 50

The size of one degree of Celsius is equal to_________________?

11 / 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 ?

12 / 50

An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?

13 / 50

When A.C current passes through a capacitor then the current relationship will be_______________?

14 / 50

If a body of mass 10 kg is allowed to fall freely, its weight becomes______________?

15 / 50

The distance between any two consecutive crests or troughs is called____________________?

16 / 50

The length of the second pendulum is_________________?

17 / 50

The velocity of laser light is___________________?

18 / 50

Which one is the dimensionally correct equation ?

19 / 50

Bernoulli?s equation is applicable for_________________?

20 / 50

It is easier to turn a steering wheel with both hands than with a single hand because______________?

21 / 50

Two convex lenses of equal focal length f are placed in contact the resultant focal length of the combination is______________?

22 / 50

A lens which converges a beam of parallel rays to a point is called______________?

23 / 50

Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is__________________?

24 / 50

The tides raise the mater in the see roughly in a day___________________?

25 / 50

The relation between the escape velocity V esc and orbital speed Vo is given by________________?

26 / 50

Which equation is not dimensionally correct ?

27 / 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 ?

28 / 50

In normal state of energy the incident high energy photons will be______________?

29 / 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_______________?

30 / 50

Terminal velocity of the body is directly proportional to the_______________?

31 / 50

Increase in velocity of sound in the air for 1?C rise in temperature is_________________?

32 / 50

Which one of following band is completely filled in case of conductors ?

33 / 50

The electrons in conduction band are free to___________________?

34 / 50

Which one is the derived quantity in SI units _____________?

35 / 50

A particle having the mass of an electron and the charge of a proton is called a______________?

36 / 50

The__________branch of Physics deals with nuclear particles such as neutrons, protons and nuclear?

37 / 50

Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?

38 / 50

The profile of aeroplane wing which lifts it up is called as_____________?

39 / 50

In double slit experiment we observe _____________________?

40 / 50

A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?

41 / 50

The charge on beta particle is________________?

42 / 50

The uncertainty in momentum & position is due to its_____________?

43 / 50

Stopping potential for a metal surface in case of photoelectric emission depends on_____________?

44 / 50

How many main frontiers of fundamental science ?

45 / 50

Reflecting mirrors in laser is used to______________?

46 / 50

If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?

47 / 50

When two protons are brought together_____________________?

48 / 50

There are three bulbs of 60W 100W and 200W which bulb has thickest filament ?

49 / 50

A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to ____________________?

50 / 50

Joule Thomson effect is based upon __________ ?

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