Engineering Questions — Physics
138 solved questions with detailed explanations
Q.28. At t = 0, a body of mass 100 g starts moving under the influence of a force N. After 2s its position is m . The ratio x : y is
Q.40. A magnetic field vector in an electromagnetic wave is represented by, . Its associated electric field vector is
Q.37. Under steady state condition the potential difference across the capacitor in the circuit is V.
Q.41. Two point charges q₁ = 3µC and q₂=-4µC are placed at points (2\hat{i}+3\hat{j}+3\hat{k}) and (\hat{i}+\hat{j}+\hat{k}) respectively. Force on charge q₂ is N. (Take \frac{1}{4\pi \epsilon_0} = 9×
Q.31. The two projectiles are projected with the same initial velocities at the 15° and 30° with respect to the horizontal. The ratio of their ranges is 1: x. The value of x is
Q.37. A voltmeter with internal resistance of can be used to measure upto 20 V. In order to increase its measuring range to 30 V, the required modification is to ________
Q.33. The position of center of mass of three masses 2 kg, 3 kg and 15 kg placed with respect to mid point (p) of normal bisector, as shown in the figure is ________.
Q.26. Consider two identical metallic spheres of radius R each having charge Q and mass m. Their centers have an initial separation of 4R. Both the spheres are given an initial speed of u towards each
Q.36. In interference experiment the path difference between two interfering waves at a point A on the screen is , where is the wavelength of these waves, and at another point B the path difference i
Q.29. A gas balloon is going up with a constant velocity of 10 m/s. When this balloon reached a height of 75 m, a stone is dropped from it and balloon keeps moving up with the same velocity. The heigh