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Two towers AB and CD are situated a distance d apart as shown in Fig. 5.45. AB is 20m high and CD is 30m highfrom the ground . An object of mass m is thrown from the top of AB horizontally with a velocity 10m/s towards CD. simu ltaneously another object of mass 2 m is thrown from the top of CD at an angle of 60^(@) to the horizotnal towards AB with the same magnitude of initial velocity as that of the first object. the two objects move in the same vertical plane, clollide in mid air and stick to each other, (a) Calcu late the distance d between the towers and (b) fin the position where the objects hit the ground.

Two towers AB and CD are situated at a distance d apart, as shown in figure. AB is 20 m high and CD is 30 m high from the ground. An object of mass m is thrown from the top of AB horizontally with a velocity of 10 m/s towards CD. Simultaneously another object of mass 2 m is thrown fromt the top of CD at an angle of 60^(@) to the horizontal towards AB with the same magnitude of initial velocity as that oft he first object. The two objects move in the same vertical plane, collide in mid air and stick to each other (i) calculate the distance between the towers and (ii) find the position where the objects hit the ground.

A biconvex lens separates two media of refractive indices 1.3 and 1.7. the refractive index of the lens is 1.5 and the radii of curvature of the two sides of the lens are r_(1)=10cm and r_(2)=60cm . The medium of refractive index 1.3 extends to 78 cm from the lens and that of refractive index 1.7 extends of 34 cm from the lens. A luminous object O is at a distance of 144 cm from the lens. Find the position of the final image from the lens.

Read the following passage and answer the questions given after it. Passage: The much-awaited expansion of Delhi’s Indira Gandhi hrternational Airport is expected to begin by March-end as the airport operator has received three bids for the R 9.000-crore project. two officials familiar with the matter said. Two bids are fi'om foreign companies while one is from an Indian firm. The airport operator. the GMR Group-led Delhi International Airport Ltd (DIAL). is expected to finalise the bidder this week. After the armouncement. the successful bidder is expected to take around two months to mobilise the workforce and begin expansion work. The bid document says the selected company has to complete work in 42 months. All the three bidders are reported to have quoted 39 months the sources said. The expansion is aimed to meet the rapid traffic growth that has already made IGI Asia’s seventh busiest airport. The selected company will work on the expansion of Terminal 1 and Terminal 3 and the construction of a new runway and taxiways. Roads leading to the airport will be widened and new approach roads will be built. The operator expects the expansion. which will start with Terminal 1, to be completed by 2021 — taking the overall handling capacity of the airport to 85 million passengers per year from the current 70 million. It will be followed by Phase 2 of the expansion, which includes construction of another brand new terminal. Data released last year by Airports Council International showed that the passenger traffic at the Delhi Airport grew 14.1% year on year to 63.45 million in 2017. It was the first time it breached the 60-million passenger mark. In 2018, it was just below 70-million mark. The new air traffic control (ATC) tower. which will open in 2019. and the fourth runway. to be laturclred in 2021. would help it reduce air congestion and handle more flights. “Terminal 1 handles domestic traffic for low-cost carriers. These have registered a phenomenal growth in the last few years, calling for an expansion of the ternrirral. Delhi Metro rurder its Phase 3 programme is connecting this terminal to catchment areas of central and south Delhi. Since T1 is operating beyond its capacity, the expansion will begin from there and cover the airside. terminal building and city side.” said a DIAL official. According to the Master Plan, T1 ’s capacity will increase fi'om 20 million to 40 million and that of Terminal 3 hour 34 million to 45 million. Inter-terminal connectivity through the Airport Metro between T1 and T3 is also part of the expansion plan. DIAL has appointed AECOM, a design and development consultant for infrastructure projects, to complete the preliminary design for the expansion work. Which of the following measures will help the airport reduce air congestion and handle more flights for the time being?

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