9. A calculate the minimum valu
turn a beam of light by total internal reflection through 90°
D. 1.20 E. 4.11
A wave of frequency 75Hz form a stationary pattern in a medium where the distan
between adjacent nodes is 2.0cm. What is the velocity of the wave? A. 3m/s B. 30
C. 300m/s D. 0.3m/s E. 150m/s
The half-life of a nuclide is 5 days, what fraction of the initial sample will remain
30 days ...
A. 1/8 B. 1/16 C. 1/24 D. 1/36 E/ 1/64
0.
HEMISTRY
How many farads of electricity are required to deposit 216 grams of silver fr
solution of silver nitrate?
A. 1 B.2 C. 3 D. 4 E. 5
Twenty two grams of a certain gas occupy 11.2 litres at S. T.P. Assume the gas be
ideally. How many mcles of gas are there in the system? A. 0.5 B. 0.6 C.
0.8 E. 0.9
Which is the most acidic oxide of the following? (A). CO (B). MnO (C). Ca
N20 (E). Cr203
The carbon atoms in propyne are arranged at A. 60° B. 90° C. 109° D. 120°
Which of the following have saturated isomer? A. methane and ethane B. met
propane C. ethane and propane D, butane and methane E. butane and pentane
When coal is heated at 1000 - 1300°C, the product is A. coal gas B. coal
coal neat coal flash E. coal bed​