Related Questions

A motorist knows four different routes from Bristol to Birmingham. From Birmingham to Sheffield he knows three different routes and from Sheffield to Carlisle he knows two different routes. How many routes does he know from Bristol to Carlisle ?
A 4
B 8
C 12
D 24
একটি ট্রেনের স্থির অবস্থায় দৈর্ঘ্য হলো 100 m। এটি অতি উচ্চ বেগে 80m দৈর্ঘ্যের একটি সুড়ঙ্গের মধ্য দিয়ে যায়। সুড়ঙ্গের দুই প্রান্তে অবস্থিত পর্যবেক্ষকরা লক্ষ করেন যে, একটি মুহূর্তে ট্রেনটির দৈর্ঘ্য ঠিক সুড়ঙ্গের দৈর্ঘ্যের সমান হয়। c এর এককে ট্রেন এর বেগ কত? (A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 80 m. Observers located at both ends of the tunnel note that at one instant the train appears to exactly fit within the tunnel. What is the velocity of the train expressed in units of c?)
A 0.866 c
B 0.333 c
C 0.5 c
D 0.6 c
The Atlantic Ocean routes are busier than the Pacific Ocean routes because Atlantic Ocean ________
A Routes are shorter
B Routes are not so dangerous
C Is surrounded on both sides by industrialised nations
D Has better shipping facilities
channel Tunnel is an under sea rait tunnel linking.
A England & Ireland
B England & Rfance
C France & Germany
D None of these.
A train 800 meters long is running at a speed of 78 km/hr . If it crosses a tunnel in 1 minute, then the length of the tunnel ( in meters ) is :
A 360
B 500
C 540
D 130
Seikan Tunnel which is a Railway tunnel with less than half length under seabed is located in which country?
A Japan
B South Korea
C North Korea
D China
India's longest tunnel Jawahar tunnel is located in which state?
A Jammu and Kashmir
B Maharashtra
C Karnataka
D Himachal Pradesh
ধর, পৃথিবীর ব্যাস বরাবর একটি সুড়ঙ্গ খনন করা হলো এবং পৃথিবীর পৃষ্ঠ থেকে একটি ক্ষুদ্র বস্তুকে সুড়ঙ্গের মধ্যে ছেড়ে দেওয়া হলো বস্তুটি যখন পৃথিবীর কেন্দ্রে পৌঁছাবে তখন মুক্তিবেগ Ve এর সাপেক্ষে বস্তুটির বেগ কত হবে? (imagine that a tunnel is dug along a diameter of the Earth and a small body is dropped into the tunnel from the surface. What will be its speed in terms of the escape speed Ve when it reaches the centre of the Earth?)
A 32Ve
B 12Ve
C 12Ve
D 0
Addition of grog in fireclay brick during its manufacture is advantageous, because it results in
A Less shrinkage in heating, decreased apparent porosity & increased specific gravity
B High strength & thermal spalling resistance
C Less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production
D All of the above
The advantages of providing a pair of tunnels as compared to only one large highway tunnel is:
A Economy in cost of construction
B Avoidance of head on collisions
C Provision of separate exit and entrance of two traffic streams
D All the above

Next steps