Physics-
General
Easy
Question
A particular emission line, detected in the light from a galaxy, has a wavelength 
, where 
is the proper wavelength of the line. The galaxy distance from us
The correct answer is:
Related Questions to study
chemistry-
Identify the set from the following which cannot form acetone in a single –step reaction
Identify the set from the following which cannot form acetone in a single –step reaction
chemistry-General
chemistry-
(A) is:
(A) is:
chemistry-General
physics-
A beam of light AO is incident on a glass slab 
in a direction as shown in figure. The reflected ray OB is passed through a Nicol prism on viewing through a Nicole prism, we find on rotating the prism that
A beam of light AO is incident on a glass slab in a direction as shown in figure. The reflected ray OB is passed through a Nicol prism on viewing through a Nicole prism, we find on rotating the prism that
physics-General
chemistry-
The products (A) and (B) are:
The products (A) and (B) are:
chemistry-General
chemistry-
The products (B) and (C) are:
The products (B) and (C) are:
chemistry-General
Maths-
If Z = aX + bY and r is the correlation coefficient between X and Y, then 
is equal to -
If Z = aX + bY and r is the correlation coefficient between X and Y, then is equal to -
Maths-General
maths-
The imaginary part of 
is-
The imaginary part of is-
maths-General
maths-
If the lines 
and 
are concurrent, then the value of l is
If the lines and are concurrent, then the value of l is
maths-General
maths-
A: The product of the perpendiculars from 
B: The product of perpendiculars from (1,1) to the pair of lines 
C: The product of perpendiculars from (0,0) to pair of lines 
D: The square of the distance from (0,0) to the point of intersection of 
Arrange A,B,C,D in ascending order
A: The product of the perpendiculars from
B: The product of perpendiculars from (1,1) to the pair of lines
C: The product of perpendiculars from (0,0) to pair of lines
D: The square of the distance from (0,0) to the point of intersection of Arrange A,B,C,D in ascending order
maths-General
maths-
If the equation 
represents a pair of straight lines, then the square of the distance of their point of intersection from the origin is
If the equation represents a pair of straight lines, then the square of the distance of their point of intersection from the origin is
maths-General
maths-
denotes a pair of straight lines, then the point of intersection of the lines is
denotes a pair of straight lines, then the point of intersection of the lines is
maths-General
maths-
The point of intersection of the straight lines represented by 
The point of intersection of the straight lines represented by
maths-General
maths-
The product of the perpendicular distances from the point (-2, 3) to the lines 
The product of the perpendicular distances from the point (-2, 3) to the lines
maths-General
maths-
The distance between the two lines represented by 
The distance between the two lines represented by
maths-General
maths-
The distance between the parallel lines 
The distance between the parallel lines
maths-General
