Physics Quiz 7

1 / 50

**Thermions are________________?**

2 / 50

**A 100?F capacitor with a 12V source in series having frequency 50Hz will offer a capacitive reactance of about______________?**

3 / 50

**When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?**

4 / 50

**When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used ?**

5 / 50

**Distance covered by a freely falling body in 2 seconds will be__________________?**

6 / 50

**A 10? electric heater is connected to a 220V 50Hz mains supply. What is the peak value of the potential difference across the heater element ?**

7 / 50

**Which phenomena can be applied to estimate the velocity of star with respect to earth ___________________?**

8 / 50

**Errors in the transmission of power through optic fiber can be minimized by using a______________?**

9 / 50

**In liquids and gases the current is due to the motion________________?**

10 / 50

**Gas molecules of different masses in the same container have the same average transnational kinetic energy which is directly proportional to their_____________?**

11 / 50

**The collision between two bodies be elastic if bodies are_________________?**

12 / 50

**To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?**

13 / 50

**The density of human blood is nearly equal to____________?**

14 / 50

**Electromagnetic waves travel in free space with the speed of___________________?**

15 / 50

**The branch of physics which deals with the living things is called_________?**

16 / 50

**The flow of ideal fluid is always_______________?**

17 / 50

**X-rays are similar in nature to_______________?**

18 / 50

**If the density of atoms remain same along any direction in a crystal is called__________________?**

19 / 50

**The thrust on the rocket in the absence of gravitational force of attraction is__________________?**

20 / 50

**A completely filled band is called__________________?**

21 / 50

**Addition of vector obeys_____________?**

22 / 50

**Which one is not a type of dynamic equilibrium ?**

23 / 50

**In which quadrant, the only value of tan will be positive ?**

24 / 50

**When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?**

25 / 50

**The force responsible for the vibratory motion of the simple pendulum is_________________?**

26 / 50

**One kilowatt hour is the amount of energy delivered during _______________?**

27 / 50

**In an angular motion, Newton?s second law of motion is_____________?**

28 / 50

**Boltzman constant K in terms of universal gas constant R and Avagadros number Na is give as_______________?**

29 / 50

**For a simple pendulu,m the restoring force is caused by________________?**

30 / 50

**Coefficient of viscosity of honey is greater than______________?**

31 / 50

**X-rays are diffracted by a crystal but not by a diffraction grating because_____________?**

32 / 50

**In the capacitive circuit the current___________________?**

33 / 50

**Which of the following branch of Physics deals with the internal structure of earth?**

34 / 50

**Unit of G is ______________?**

35 / 50

**A body is moving with uniform velocity. Its______________________?**

36 / 50

**Resistance of a wire on increasing its temperature will_________________?**

37 / 50

**We can produce heat by________________?**

38 / 50

**For what displacement the P.E becomes 1/4 of its maximum value ?**

39 / 50

**Which one of the following cannot be polarized ?**

40 / 50

**In the shadow of a ball the central portion appears bright that happens due to_________________?**

41 / 50

**In which quadrant the two rectangular components of a vector have same sign ?**

42 / 50

**Farad is the unit of___________?**

43 / 50

**Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ?**

44 / 50

**What are the dimensions of stress ?**

45 / 50

**The dimensions of the coefficient of viscosity are_____________?**

46 / 50

**The source of tidal energy is____________________?**

47 / 50

**One AMU is equal to__________________?**

48 / 50

**Which one of the following physical quantities does not have the dimensions of force per unit area ?**

49 / 50

**The speed of light will be minimum while passing through ?**

50 / 50

**A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?**

Provide Your Information