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Let us consider the time of the journey be t hrs, As we know, the distance is the same. According to the question 10 (t + 4.5/60) = 20 (t-4.5/60) 2 (t + 3/40) = 4 (t-3/40) 2t+ 3/20 = 4t-12/40 4t-2t = 3/20 + 12/40 2 t = 18/40 t=9/40 Distance = speed × time Distance = 10 (9/40 + 3/40) = 3 km
Two cars A and B are running at velocities of 60km per hour and 45 km per hour. What is the relative velocity of car A with respect to car B, if both ar...
Cryogenics is a branch of Physics that deals with what?
The direction of magnetic field inside a magnet is
In circular motion the direction of velocity changes at _______ points.
Which of the following pairs of phenomena illustrate the particle nature of the electromagnetic radiation?
A galvanometer coil has a resistance of 14 Ω and the metre shows full scale deflection for a current of 4 mA. How will you convert the metre into a vo...
The order of wavelengths for ordinary light is:
The colour of sky appears blue due to –
Which of the following particles in motion, having the same kinetic energy, has the shortest wavelength?
In an experimental arrangement of a Fresnel's biprism, monochromatic light of wavelength 2. is used to produce interference fringe pattern. On introduc...