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Q. Give one merit of a scanning electron microscope over a transmission electron microscope?
Answer:-
The SEM has turn into more popular than the TEM as it can produce images of high resolution greater clarity and three dimensional qualities and requires less sample preparation.
Sound waves are being used to determine the depth of a freshwater lake, as shown in the figure below. If the water is 25°C and it takes 1.2 s for the echo to return to the sens
A Surfer sits on his board waiting as waves go by to catch a ride back to shore. Assuming the waves can be modelled as a sine wave given by h (x,t) = 1.75 sin (0.03 Πx - 0.15 Πt) [
An ice-skater with a moment of inertia of 1.1 kg/m2 starts to spin with her arms extended. After 25 s, she has an angular velocity of 15 rev/s. What is the net torque acting on
Question: Resultant of two forces P & Q is R. If Q is doubled R is doubled while if Q is reversed R is again doubled. Show that P:Q:R=(2) 1/2 :(3) 1/2 :(2) 1/2 .
explain the maxima and minima in fraunhoffer difraction
(i) A closed system consisting of 2 kg of a gas undergoes a process during which the relationship between pressure and specific volume is pv1.3 = c. The process begins with 1 p =1b
Q. A screen is placed 90 cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20cm. Determine the focal lengt
what is the substance produced in the liver that acts in the small intestine during digestion?
Surface crystallography and epitaxy. Fe thin films are grown on a single-crystal Al(100) substrate surface. The films grow with no dislocations (if they are thin enough) with sug
One would expect proton to have very large: (1) Ionization potential (2) Radius (3) Charge (4) Hydration energy Ans:(4) Hydration energy
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