Physics Quiz 5

1 / 50

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

2 / 50

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

3 / 50

**In double slit experiment we observe _____________________?**

4 / 50

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

5 / 50

**Steradian is the SI unit of________________?**

6 / 50

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

7 / 50

**Terminal velocity of the body is directly proportional to the_______________?**

8 / 50

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

9 / 50

**Reflecting mirrors in laser is used to______________?**

10 / 50

**The charge on an electron was determine by ________________?**

11 / 50

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

12 / 50

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

13 / 50

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

14 / 50

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

15 / 50

**Which equation is not dimensionally correct ?**

16 / 50

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

17 / 50

**The length of the second pendulum is_________________?**

18 / 50

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

19 / 50

**The dimension of force is____________________?**

20 / 50

**The velocity of laser light is___________________?**

21 / 50

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

22 / 50

**Which one is the dimensionally correct equation ?**

23 / 50

**Bernoulli?s equation is applicable for_________________?**

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

**Joule Thomson effect is based upon __________ ?**

28 / 50

**The uncertainty in momentum & position is due to its_____________?**

29 / 50

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

30 / 50

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

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

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

36 / 50

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

37 / 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 ?**

38 / 50

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

39 / 50

**The most suitable unit for expressing nuclear radius is_______?**

40 / 50

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

41 / 50

**How many main frontiers of fundamental science ?**

42 / 50

**When two protons are brought together_____________________?**

43 / 50

**Which one is the derived quantity in SI units _____________?**

44 / 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 ?**

45 / 50

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

46 / 50

**The size of one degree of Celsius is equal to_________________?**

47 / 50

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

48 / 50

**The charge on beta particle is________________?**

49 / 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_______________?**

50 / 50

**The electrons in conduction band are free to___________________?**

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