Question
A bus is 900 metres ahead of a car when the car starts
chasing it at a speed of 30 m/s. If the bus is moving at 24 m/s, then find the time taken by the car to catch the bus.Solution
ATQ, Relative speed of the car = 30 – 24 = 6 m/s Required time = (900 ÷ 6) = 150 seconds
Which of the following equations correctly represents the momentum p of a photon of Energy E?
In a convex lens, when the object is at infinity, then the position of image is ______.
The energy emitted by the Sun is primarily due to what process?
What is the principle behind the working of a transformer?
A silicon sample is doped such that the number of holes far exceeds the number of electrons. Which of the following is true about its conductivity?
Which one of the following is called a red planet?
For a cell terminal potential difference is 3.5 V when circuit is open and reduces to 2.5 V when cell is connected to a resistance of R = 10Ω then...
Two cities are 125 km apart. Electric power is sent from one city to another city through copper wires. The fall of potential per km is 9.6 volt and the...
Which of the following is NOT a vector quantity?
Calculate the speed of light in diamond if its refractive index is 2.4.
(Speed of light = 3 × 10⁸ m/s)
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