Get Advice on Live Video Call
Earn $ Cash $ with
consultations on Bissoy App

The temperature gradient for stratosphere is 0.001 K/m. Assuming the temperature at 20 km above MSL is 216.65 K, what is the temperature at 32 km above MSL?

Correct Answer: 250.17 K
Given, Temperature gradient (a) = 0.001 K/m = 1 K/km At point 1, h1 = 20 km, T1 = 216.65 K At point 2, h2 = 32 km, T2 =? T2 = a.(h2 – h1) + T1 = 1*(32-20) + 216.65 = 228.65 K

What will be the acceleration due to gravity at 300 kms above MSL, assuming the gravity at MSL is 9.81 m/s2 and the radius of Earth is 6378 km?

The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?
1. There are no clouds or water vapour in the lower stratosphere.
2. There are no vertical winds in the lower stratosphere.
Which of the statements given above is/are correct in this context?

একজন চাকরিজীবীর আয় ও ব্যয়ের অনুপার ২০ঃ ১৫ হলে, তার মাসিক সঞ্চয় আয়ের শতকরা কত অংশ?

একটি ট্রান্সফরমারের প্রাইমারি ও সেকেন্ডারি তারের ঘূর্ণনের অনুপাত 20ঃ 1 এবং সেকেন্ডারিতে 20 omega রোধ লাগানো আছে। যদি প্রাইমারিতে 220 V প্রয়োগ করা হয় তাহলে এর মধ্যে বিদ্যুৎ প্রবাহ হবে-

Directions: Seven different boxes A, B, C, D, E, F and G of different colours viz., Orange, Pink, Purple, Yellow, Blue, Red and Green are arranged one above the other. The box at the bottom of arrangement is numbered 1, the above box is numbered 2 and so on. B is immediately above E. More than two boxes are above the Orange box. The Yellow box is immediately below A. Only one box is between the Orange box and F. G is immediately above the Red box. Only one box is between B and the Pink box. Only two boxes are between the Pink and the Green box. Only two boxes are between the Yellow box and the Orange box. The Purple box is neither at the top nor at the bottom of the arrangement.B is above Pink box. C is immediately above F. Neither C nor G is a Yellow box. G is not a Orange box. Question: Which combination represents the position of C and its colour?

What is the density of air at a geopotential altitude of 11 km if the pressure and temperature at that altitude are 22.7 kPa and 216.66 K respectively? Given, density, pressure and temperature at MSL is 1.225 kg/m3, 101325 Pa and 288.16 K respectively.

Consider the following statements regarding ICAO recommendation for correction to basic runway length of these statements
1. The basic runway length should be increased at the rate of 7 percent per 300 m rise in elevation above the mean sea level.
2. The basic runway length after having been corrected for elevation should be further increased at the rate of 1 percent for every 1°C rise in airport reference temperature above the standard atmospheric temperature at that elevation.
3. The runway length after having been corrected for elevation and temperature should be further increased at the rate of 20% for every 1 percent of effective gradient.

Elevation of airport site above MSL is a factor that controls airport size.

What is the geopotential altitude for a geometric altitude of 100 km above MSL? Given, radius of earth is 6378 km.

Which of the following statements concerning atmosphere of the Earth are correct? 1. In stratosphere, temperature increases with altitude. 2. In mesosphere, temperature decreases with altitude. 3. The lowest temperature of the atmosphere is recorded in the upper part of mesosphere. 4. Tropopause is an isothermal zone. Select the correct answer using the code given below.