. Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time 𝑡1. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time 𝑡2. The time taken by her to walk up on the moving escalator will be (a) 𝑡1𝑡2 𝑡2− 𝑡1 (b) 𝑡1𝑡2 𝑡2+ 𝑡1 (c) 𝑡1− 𝑡2 (d) 𝑡1+𝑡2 2
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
You have rated this answer /10
Browse free questions and answers by Chapters
- 1 Thermodynamics
- 2 Gravitation
- 3 Electromagnetic Waves
- 4 Communication Systems
- 5 Laws of Motion
- 6 Current Electricity
- 7 Work, Energy and Power
- 8 Kinematics
- 9 Physics and Measurement
- 10 Rotational Motion
- 11 Properties of Solids and Liquids
- 12 Kinetic Theory of Gases
- 13 Oscillations and Waves
- 14 Electrostatics
- 15 Magnetic Effects of Current and Magnetism
- 16 Electromagnetic Induction and Alternating Currents
- 17 Optics
- 18 Dual Nature of Matter and Radiation
- 19 Atoms and Nuclei
- 20 Electronic Devices