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Figures (a) and (b) show a square loop of side a rotating about the given axes in a uniform magnetic field such that the field is perpendicular to the axis in both cases. Angular speed of rotation is both cases being the same.
20
Oct
Figures (a) and (b) show a square loop of side a rotating about the given axes in a uniform magnetic field such that the field is perpendicular to the axis in both cases. Angular speed of rotation is both cases being the same. 0). If the rod moves with a velocity v = v0 find [...]
A conduting wire ABC (as shown) is moving with a constant velocity along horizontal direction. The magnetic field is perpendicular to the wire and directed into the page. AB =BC. Find the range of angle (θ) made by rod AB with horizontal at A so that value of induced emf at A is greater than at C
20
Oct
A conduting wire ABC (as shown) is moving with a constant velocity along horizontal direction. The magnetic field is perpendicular to the wire and directed into the page. AB =BC. Find the range of angle (θ) made by rod AB with horizontal at A so that value of induced emf at A is greater than [...]
Two particles are shown in figure. At t=0 a constant force F=6N starts acting on 3kg. Find the velocity of circle of mass of these particle at t=5s.
20
Oct
Two particles are shown in figure. At t=0 a constant force F=6N starts acting on 3kg. Find the velocity of circle of mass of these particle at t=5s. Two particles are shown in figure. At t=0 a constant force F=6N starts acting on 3kg. Find the velocity of circle of mass of these particle at [...]
Figure shows a conducting frame having battery and a resistance on which a movable conductor of length 0.5 m can slide, The whole arrangement is placed in a uniform magnetic field of B =0.4 T directed perpendicular and into the plane of frame. Initially the circuit is open. When the key is inserted, the conductor begins to move. It is found that a force 0.5 N has to be applied on the conductor to the left to keep it moving at constant speed to the right. Current flowing in the conductor is:
20
Oct
Figure shows a conducting frame having battery and a resistance on which a movable conductor of length 0.5 m can slide, The whole arrangement is placed in a uniform magnetic field of B =0.4 T directed perpendicular and into the plane of frame. Initially the circuit is open. When the key is inserted, the conductor [...]
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Figure shows a conducting frame having battery and a resistance on which a movable conductor of length 0.5 m can slide ,
the conductor begins to move. It is found that a force 0.5 N has to be applied on the conductor to the left to keep it moving at constant speed to the right. Current flowing in the conductor is: ,
The whole arrangement is placed in a uniform magnetic field of B =0.4 T directed perpendicular and into the plane of frame. Initially the circuit is open. When the key is inserted ,
A conducting rod of length 1 is moving on a horizontal smooth surface. Magnetic field in the region is vertically downward and magnitude B0. If centre of mass (COM) of the rod is translating with velocity v0 and rod rotates about COM with angular velocity v0/l, then potential difference between points O and A will be
20
Oct
A conducting rod of length 1 is moving on a horizontal smooth surface. Magnetic field in the region is vertically downward and magnitude B0. If centre of mass (COM) of the rod is translating with velocity v0 and rod rotates about COM with angular velocity v0/l, then potential difference between points O and A will [...]
A man stands at one end of a boat which is stationary in water. Neglect water resistance. The man now moves to the other end of the boat and again becomes stationary. The centre of mass of the ‘man plus boat’ system will remain stationary with respect to water
20
Oct
A man stands at one end of a boat which is stationary in water. Neglect water resistance. The man now moves to the other end of the boat and again becomes stationary. The centre of mass of the ‘man plus boat’ system will remain stationary with respect to water An object initially at rest explodes [...]
A bag of mass M hangs by a long massless rope. A bullet of mass in, moving horizontally with velocity u, is caught in the bag. Then for the combined (bag + bullet) system, just after collision
20
Oct
A bag of mass M hangs by a long massless rope. A bullet of mass in, moving horizontally with velocity u, is caught in the bag. Then for the combined (bag + bullet) system, just after collision A bag of mass M hangs by a long massless rope. A bullet of mass in is caught [...]
A ball is dropped from a height of 45m from the ground. The coefficient of restitution between the ball and the ground is 2/3. What is the distance travelled by the ball in 4th second of its motion. Assume negligible time is spent in rebounding. Let g=10ms^2
20
Oct
A ball is dropped from a height of 45m from the ground. The coefficient of restitution between the ball and the ground is 2/3. What is the distance travelled by the ball in 4th second of its motion. Assume negligible time is spent in rebounding. Let g=10ms^2 An object initially at rest explodes into three [...]
Figure shows a magnet suspended at the lower end of a spring while its length lies along the axis of a fixed circular coil. THe magnet is made to oscillate . Deflection in the galvanometer is
20
Oct
Figure shows a magnet suspended at the lower end of a spring while its length lies along the axis of a fixed circular coil. THe magnet is made to oscillate . Deflection in the galvanometer is Figure shows a magnet suspended at the lower end of a spring while its length lies along the axis [...]
Figure shows the velocity-time graph for two masses R and S that collided elastically. Which of the following statements is true?
20
Oct
Figure shows the velocity-time graph for two masses R and S that collided elastically. Which of the following statements is true? Figure shows the velocity-time graph for two masses R and S that collided elastically. Which of the following statements is true? October 20, 2020 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter [...]