Physics Quiz 13

1 / 50

**The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?**

2 / 50

**Name the branch of science which deals with the study of sound and sound waves?**

3 / 50

**Longitudinal waves do not exhibit _____________________?**

4 / 50

**Which of the following properties of molecules of a gas is same for all gases at particular temperature ?**

5 / 50

**The total energy of a body executing S.H.M is directly proportional to________________?**

6 / 50

**An observer shoots parallel to a meter stick at very high (relativistic) speed and finds that the length of meter stick is________________?**

7 / 50

**Null vector is a vector which has________________?**

8 / 50

**Work has the dimension as that of same as that of__________________?**

9 / 50

**Least distance of distinct vision_____________?**

10 / 50

**When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?**

11 / 50

**How many types of units are in SI ?**

12 / 50

**The standard vector symbol for flux density is ____________________?**

13 / 50

**The performance of a refrigerator is described by________________?**

14 / 50

**During fusion of hydrogen into helium________________?**

15 / 50

**Compton effect proves the________________?**

16 / 50

**A galvanometer basically is an instrument used to ____________________?**

17 / 50

**A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called______________?**

18 / 50

**The relationship between Tesla and smaller unit Gauss of magnetic induction is given by_________________?**

19 / 50

**Sterilization of surgical instruments medical supplies and bandages can be done by exposing them to a beam of_______________?**

20 / 50

**pure resistor circuit the voltage and current are_______________?**

21 / 50

**Geiger counter is suitable for _________________?**

22 / 50

**An ammeter measures the total current flowing through a circuit when it is connected__________________?**

23 / 50

**Ultrasonic have__________________?**

24 / 50

**In a plane polarized light _________________?**

25 / 50

**The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?**

26 / 50

**Proton electron neutron and a particles have same momentum. Which of them have highest K.E ?**

27 / 50

**A hoop and disc have same mass and radius. Their rotational K.E are related by an equation______________?**

28 / 50

**The device used for conversion of D.? C. to A.? C. is called______________?**

29 / 50

**The speed of the fluid is maximum in the venturi meter at_______________?**

30 / 50

**In Davisson-Germer experiment the diffracted proton from crystal shows______________?**

31 / 50

**The number of beats produced per second is equal to____________________?**

32 / 50

**On a clear day at noon the solar energy reaching the earth is ____________________?**

33 / 50

**Depletion region of a junction is formed_____________?**

34 / 50

**Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________?**

35 / 50

**When same current passes for same time through a thick and thin wire_________________?**

36 / 50

**When fluid is incompressible then________________?**

37 / 50

**The average acceleration caused by gravity per second is____________?**

38 / 50

**A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?**

39 / 50

**Semi-conductors with donor atoms and free electrons belong to the type________________?**

40 / 50

**Which one is the best material for making connecting wires ?**

41 / 50

**The span of the broad jump depends upon_______________?**

42 / 50

**Ratio of the weight of H-atom to that of an electron is approximately______________?**

43 / 50

**The direction of the vector product is given by______________?**

44 / 50

**When crest of one wave falls over the trough of the other wave this phenomenon is known as________________?**

45 / 50

**Einstein?s photoelectric equation is given by_______________?**

46 / 50

**If the length of the second pendulum becomes four times, then its time period will become________________?**

47 / 50

**If 1 ampere current flows through 2m long conductor the charge flow through it in 1 hour will be_______________?**

48 / 50

**Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?**

49 / 50

**Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?**

50 / 50

**What is the outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s ?**

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