Physics-
General
Easy
Question
A hollow cylinder with inner radius R, outer radius 2R mass M is rolling with speed of its axis v. Its kinetic energy is
- None
The correct answer is: None
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Four identical bulbs each rated 100 watts, 220 volts are connected across a battery as shown. The power consumed by them is:
Four identical bulbs each rated 100 watts, 220 volts are connected across a battery as shown. The power consumed by them is:
physics-General
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Resistors R1 and R2 have an equivalent resistance of 6 ohms when connected in the circuit shown below. The resistance of R1 could be
Resistors R1 and R2 have an equivalent resistance of 6 ohms when connected in the circuit shown below. The resistance of R1 could be
physics-General
physics-
In the two circuits shown, all the light bulbs and batteries are identical. If A, B and C respectively denotes the brightness of light bulbs A, B & C then
In the two circuits shown, all the light bulbs and batteries are identical. If A, B and C respectively denotes the brightness of light bulbs A, B & C then
physics-General
physics-
Two strings support a uniform rod as shown. String at end B is cut. Which of the following is true just after cut
I] initial acceleration of A is vertical
II] initial acceleration of A is horizontal
III] initial acceleration of centre of mass of rod is vertical
IV] initial acceleration of centre of mass of rod is horizontal
Two strings support a uniform rod as shown. String at end B is cut. Which of the following is true just after cut
I] initial acceleration of A is vertical
II] initial acceleration of A is horizontal
III] initial acceleration of centre of mass of rod is vertical
IV] initial acceleration of centre of mass of rod is horizontal
physics-General
physics-
The potential of point O in the steady state circuit shown on the right is
The potential of point O in the steady state circuit shown on the right is
physics-General
physics-
A mass is at the center of a square, with four masses at the corners as shown.
Rank the choices according to the magnitude of the gravitational force on the center mass.
A mass is at the center of a square, with four masses at the corners as shown.
Rank the choices according to the magnitude of the gravitational force on the center mass.
physics-General
physics-
In the figure shown the electric potential energy of the system is (q is at the centre of the conducting neutral spherical shell of inner radius a and outer radius b)
In the figure shown the electric potential energy of the system is (q is at the centre of the conducting neutral spherical shell of inner radius a and outer radius b)
physics-General
physics-
The diagram shows three concentric conducting spherical shells having radii T, 2R and 3R. The initial potential of each shell is as mentioned in the figure. If the inner most shell is earth then the charge present on its outer surface would be equal to
The diagram shows three concentric conducting spherical shells having radii T, 2R and 3R. The initial potential of each shell is as mentioned in the figure. If the inner most shell is earth then the charge present on its outer surface would be equal to
physics-General
physics-
The variation of gravitational field E and potential 
as a function of x from the center of a uniform spherical mass distribution of radius R is correctly represented, from the following plots, by
The variation of gravitational field E and potential as a function of x from the center of a uniform spherical mass distribution of radius R is correctly represented, from the following plots, by
physics-General
physics-
A (nonrotating) star collapses onto itself from an initial radius Ri with its mass remaining unchanged. Which curve in figure best gives the gravitational acceleration ag on the surface of the star as a function of the radius of the star during the collapse?
A (nonrotating) star collapses onto itself from an initial radius Ri with its mass remaining unchanged. Which curve in figure best gives the gravitational acceleration ag on the surface of the star as a function of the radius of the star during the collapse?
physics-General
physics-
Inside a charged thin conducting spherical shell of radius R, a point charge +Q is placed as shown in figure. The potential of the shell would be
Inside a charged thin conducting spherical shell of radius R, a point charge +Q is placed as shown in figure. The potential of the shell would be
physics-General
physics-
A spherical hole of radius R2 is excavated from the asteroid of mass M as shown in the figure. The gravitational acceleration at a point on the surface of the asteroid just above the excavation is
A spherical hole of radius R2 is excavated from the asteroid of mass M as shown in the figure. The gravitational acceleration at a point on the surface of the asteroid just above the excavation is
physics-General
physics-
Net charge on the outer surface of conducting sphere is
Net charge on the outer surface of conducting sphere is
physics-General
maths-
where 
are the co-factors of the elements 
for 
are the direction cosines of of three mutually perpendicular lines then 
and 
are
where are the co-factors of the elements for are the direction cosines of of three mutually perpendicular lines then and are
maths-General
maths-
The point collinear with A(0,1,-2),B(3,l,-1) and C(m-3,-4) is
The point collinear with A(0,1,-2),B(3,l,-1) and C(m-3,-4) is
maths-General
