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Marked price of the article = 600 ÷ 0.6 = Rs. 1000 Cost price of the article = 600 ÷ 1.5 = Rs. 400 Required ratio = 400:1000 = 2:5
An electron and a proton are accelerated by the same potential difference. Which one has a longer de Broglie wavelength?
A circular coil of wire consisting of 120 turns, each of radius 12 cm carries a current of 0.30 A. What is the magnitude of the magnetic field B at the ...
The dimension of which of the following is the same as that of impulse?
A string of length L is fixed at both ends. It supports a standing wave with 3 antinodes. If the speed of the wave on the string is v, what is the freq...
The magnetic field inside a long straight solenoid is:
A horse cannot pull a cart on a frictionless surface because:
An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is New...
A soap bubble shows colours when illuminated with white light. This is due to –
Current sensitivity of a moving coil galvanometer is 9 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 30 div/V. The...
Smog is a combination of –
