Physics-
General
Easy
Question
The plots of intensity versus wavelength for three black bodies at temperature T1, T2 and T3 respectively are as shown. Their temperatures are such that
The correct answer is:
Related Questions to study
physics-
Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point M of the hypotenuse
Three identical point charges, as shown are placed at the vertices of an isosceles right angled triangle. Which of the numbered vectors coincides in direction with the electric field at the mid-point M of the hypotenuse
physics-General
physics-
Two identical conductors of copper and aluminium are placed in an identical electric fields. The magnitude of induced charge in the aluminium will be
Two identical conductors of copper and aluminium are placed in an identical electric fields. The magnitude of induced charge in the aluminium will be
physics-General
physics-
Four charges are arranged at the corners of a square ABCD. as shown in the adjoining figure. The force on the charge kept at the centre O is
Four charges are arranged at the corners of a square ABCD. as shown in the adjoining figure. The force on the charge kept at the centre O is
physics-General
physics-
There is an electric field E in X-direction. If the work done on moving a charge 0.2 C through a distance of 2 m along a line making an angle 60° with the X-axis is 4.0, what is the value of E.
There is an electric field E in X-direction. If the work done on moving a charge 0.2 C through a distance of 2 m along a line making an angle 60° with the X-axis is 4.0, what is the value of E.
physics-General
physics-
As shown in the fig. charges +q and –q are placed at the vertices B and C of an isosceles triangle. The potential at the vertex A is
As shown in the fig. charges +q and –q are placed at the vertices B and C of an isosceles triangle. The potential at the vertex A is
physics-General
physics-
A tin nucleus has charge +50e. If the proton is at a distance 10–12m from the nucleus, then the potential V at this position is [charge on the proton = 1.6×10–19C]
A tin nucleus has charge +50e. If the proton is at a distance 10–12m from the nucleus, then the potential V at this position is [charge on the proton = 1.6×10–19C]
physics-General
physics-
An electron which is initially at rest is accelerated through a potential difference of one volt. The energy acquired by the electron is
An electron which is initially at rest is accelerated through a potential difference of one volt. The energy acquired by the electron is
physics-General
physics-
A charge q is placed at the centre of the open end of a cylindrical vessel. The flux of the electric field through the surface of the vessel is
A charge q is placed at the centre of the open end of a cylindrical vessel. The flux of the electric field through the surface of the vessel is
physics-General
physics-
Fig. shows a distribution of charges. The flux of electric field due to these charges through the surface S is
Fig. shows a distribution of charges. The flux of electric field due to these charges through the surface S is
physics-General
physics-
As per fig. a point charge +q is placed at the origin O. Work done in taking another point charge –Q from the point A [Co-ordinates (0,a)] to another point B [Co-ordinates (a, 0)] along the straight path AB is :
As per fig. a point charge +q is placed at the origin O. Work done in taking another point charge –Q from the point A [Co-ordinates (0,a)] to another point B [Co-ordinates (a, 0)] along the straight path AB is :
physics-General
physics-
Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting.
Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting.
physics-General
Maths-
Let be a cube root of unity and be the set of all non‐singular matrices of the form , where each of a, b and is either Then the number of distinct matrices in the set is‐
Hence no of matrices formed = 2
Let be a cube root of unity and be the set of all non‐singular matrices of the form , where each of a, b and is either Then the number of distinct matrices in the set is‐
Maths-General
Hence no of matrices formed = 2
Maths-
Let A be a matrix with non‐zero entries and let , where I is identity matrix Defi ne Tr(A) of diagonal elements and determinant of matrix A
Statement 1: Tr(A)
Statement 2:
Hence option C is suitable option
Let A be a matrix with non‐zero entries and let , where I is identity matrix Defi ne Tr(A) of diagonal elements and determinant of matrix A
Statement 1: Tr(A)
Statement 2:
Maths-General
Hence option C is suitable option
maths-
If A and I , then which one of the following holds for all , (by the principal of mathematical induction)
If A and I , then which one of the following holds for all , (by the principal of mathematical induction)
maths-General
maths-
The equation has a solution for (x, y, z) besides (0,0,0) The value of k equals
The equation has a solution for (x, y, z) besides (0,0,0) The value of k equals
maths-General