Top Physics Interview Questions :: ALLInterview.com http://www.allinterview.com Top Physics Interview Questions en-us Explain the Rectilinear Propagation of Light ? http://www.allinterview.com/showanswers/21552.html Light travels in a straight line through an homogenous medium. It can be proved by an experiment given below. Arrange two pieces of cardboard, having pin holes at the centre of each, vertically, one behind the other. They should be arranged in What is Sextent ? http://www.allinterview.com/showanswers/21562.html It is an instrument used to determine the Sun?s altitude at a given place. In other words it is the angle which the line joining the observer and the sum makes with the horizontal. It us used by sailors Describe the main types off rocks. How the different types of rocks f http://www.allinterview.com/showanswers/21509.html A rock is any large massif the harder potion of the earth?s crust- in word we ca say that one if the skid materials . in the some case it consists of only a single mineral but generally of several minerals. A rock however dies not normally have Explain the Real and Virtual Image ? http://www.allinterview.com/showanswers/21556.html When a pencil of ray, diverging from a point, after reflection and refraction, actually passes through a second point that second point is called the real image of the first point. When a pencil of rays after reflection; and refraction only ap Why does the specific gravity of milk increase, when cream is removed http://www.allinterview.com/showanswers/21055.html The cream has a lower specific gravity(density) than milk and density of a mixture depends upon its constituents, depending upon their relative proportions. A decrease on the proportion of lighter constituent will result in the increase of the sp What is the difference between Diffraction and Refraction? http://www.allinterview.com/showanswers/1171.html Refraction is bending of light due to different veelocities of light in different media but diffraction is bending of light around the edge of an obstacle. Equatorial and polar diameter. http://www.allinterview.com/showanswers/21497.html The equatorial diameter. The equatorial diameter of the earth is 7920 miles in length and polar diameter is about 27 miles shorter than the former. how the aspirator pump works? http://www.allinterview.com/showanswers/2786.html The alternating current flowing in the transformer causes periodic vibration of an attached metal strip which in turn causes alternate compression and flexion of a rubber vessel, pumping air in regular intervals. what are black holes? http://www.allinterview.com/showanswers/2788.html A black hole is a concentration of mass great enough that the force of gravity prevents anything from escaping it except through quantum tunnelling behaviour (known as Hawking Radiation). The gravitational field is so strong that the escape v Magnetic effect of the earth. http://www.allinterview.com/showanswers/21499.html Magnetic effect of the earth. The earth behaves as it has got a big magnet, running as mot a big magnet, running almost from its north to south pole inside it (the earth). Its south pole lies towards the geographical north pole and the north pole Where is Vikram Sarabai Space Research Centre? http://www.allinterview.com/showanswers/29465.html a) bangalore b) Hyderabad c) Mumbai d) kerala Explain the refraction of light ? http://www.allinterview.com/showanswers/21557.html Refraction:-When a pencil of light passes obliquely from one transparent medium into another, it undergoes some deflection from its straight path. This change in direction is called refraction Law of Refraction:- 1. The incident ray the refr Is exothermic reaction useful in Lasing process? give reasion of ur http://www.allinterview.com/showanswers/36508.html Yes. The exothermic reaction is useful in lasing process. As a laser is emitted by the process of stimulated emmision . so to stimulate the electrons we nedd some external stimulating energy . the heat given up by the exothermic reaction can Explain the Velocity and Acceleration ? http://www.allinterview.com/showanswers/21565.html Rest and motion:-A body is said to be at rest when it does not change its position with respect to its surrounding objects or when it dies not change its position with time The body is said to be in motion when it changes its position with resp What is the normal pulse beat of a human body? http://www.allinterview.com/showanswers/21135.html 78 beats per minute.