Question Answers
Sahay Sir > Question Answers
A point moves with uniform acceleration and v1, v2m and v3 denote the average velocities in the three successive intervals of time t1, t2, and t3. Which of the following relations is correct?
19
Sep
A point moves with uniform acceleration and v1, v2m and v3 denote the average velocities in the three successive intervals of time t1, t2, and t3. Which of the following relations is correct? A point moves with uniform acceleration and v1 and t3. Which of the following relations is correct? t2 v2m and v3 denote [...]
At what height the gravitational field reduces by 75 % the gravitational field at the surface of earth ?
19
Sep
At what height the gravitational field reduces by 75 % the gravitational field at the surface of earth ? At what height the gravitational field reduces by 75 % the gravitational field at the surface of earth ? September 19, 2020 Category: Arihant Physics by D.C Pandey , Chapter 10 - Gravitation , Volume 1 [...]
A battery of 24 cells each of emf 1.5 V and internal resistnace 2 Ω is to be connected in order to send the maximum current through a 12 Ω resistor. The correct arrangement of cells will be
19
Sep
A battery of 24 cells each of emf 1.5 V and internal resistnace 2 Ω is to be connected in order to send the maximum current through a 12 Ω resistor. The correct arrangement of cells will be A battery of 24 cells each of emf 1.5 V and internal resistnace 2 Ω is to [...]
A uniform solid sphere of mass M and radius R is surrounded symmetrically by a uniform thin spherical shell of radius 2R and mass m
19
Sep
A uniform solid sphere of mass M and radius R is surrounded symmetrically by a uniform thin spherical shell of radius 2R and mass m A uniform solid sphere of mass M and radius R is surrounded symmetrically by a uniform thin spherical shell of radius 2R and mass m September 19, 2020 Category: Arihant [...]
Twelve cells, each having an e.m.f of E volt are connected in series and are kept in a closed box. Some of these cells are wrongly connected with positive and negative terminals reversed. This 12 cell battery is connected in series with an ammeter, an external resistance R ohms and a two-cell battery (two cells of the same type used earlier, connected perfectly in series). The current in the circuit when the 12-cell battery and 2-cell battery aid each other is 3A and is 2A when they oppose each other. Then the number of cells in 12-cells battery that are connected wrongly is
19
Sep
Twelve cells, each having an e.m.f of E volt are connected in series and are kept in a closed box. Some of these cells are wrongly connected with positive and negative terminals reversed. This 12 cell battery is connected in series with an ammeter, an external resistance R ohms and a two-cell battery (two cells [...]
A thin rod of length L is bent to form a semi circle. The mass of the rod is M. What will be the gravitational potential at the centre of the circle ?
19
Sep
A thin rod of length L is bent to form a semi circle. The mass of the rod is M. What will be the gravitational potential at the centre of the circle ? A thin rod of length L is bent to form a semi circle. The mass of the rod is M. What will [...]
A point moves in a straight line so that its displacement x metre at time t second is given by x^2 = 1 + t^2. Its acceleration in m/s^2 at time t second is
19
Sep
A point moves in a straight line so that its displacement x metre at time t second is given by x^2 = 1 + t^2. Its acceleration in m/s^2 at time t second is A point moves in a straight line so that its displacement x metre at time t second is given by x^2 [...]
For a uniform ring of mass M and radius R at its centre
19
Sep
For a uniform ring of mass M and radius R at its centre For a uniform ring of mass M and radius R at its centre September 19, 2020 Category: Arihant Physics by D.C Pandey , Chapter 10 - Gravitation , Volume 1 ,
Two batteries of emf e1 and e2 ( e2 > e1 ) and internal resistance r1 and r2 respectively are connected in parallel as shown in the figure.
19
Sep
Two batteries of emf e1 and e2 ( e2 > e1 ) and internal resistance r1 and r2 respectively are connected in parallel as shown in the figure. Two batteries of emf e1 and e2 ( e2 > e1 ) and internal resistance r1 and r2 respectively are connected in parallel as shown in the [...]
Drops of water fall at regular fall at regular intervals from roof of a building of height H = 16 m, the first drop striking the ground at the same moment as the fifth drop detaches itself
19
Sep
Drops of water fall at regular fall at regular intervals from roof of a building of height H = 16 m, the first drop striking the ground at the same moment as the fifth drop detaches itself Drops of water fall at regular fall at regular intervals from roof of a building of height H [...]