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The logic is- 21 x 21 = 421 -21 = 420 25 x 25 = 625 – 25 = 600 17 x 17 = 289 – 17 = 272 15 x 15 = 225 – 15 = 210 Hence option 4 is true
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...
