II and III
III and IV
I and III
II and iv
Correct answer is C
No explanation has been provided for this answer.
The correct unit of energy density is?
kg m3 s-2
kg m2 s-2
kg m-3 s-2
kg m-1 s-2
Correct answer is D
No explanation has been provided for this answer.
The component of vector X along the direction of vector Y is zero when
X and Y are in opposite directions to each other
X is at an angle of 45° to Y
X is perpendicular to Y
X and Y are parallel to each other
Correct answer is D
No explanation has been provided for this answer.
1.13 x 104 ms-1
9.00 x 103 ms-1
8.00 x 103 ms-1
1.27 x 104 ms-1
Correct answer is A
V = √2GM/R.
=√[2 x 6.67 x 10\(^{-11}\) x 6.0 x 10\(^24\)] / 6.4 x 10\(^6\)
= √12.506 x 10\(^7\)
= 11,183.13
OR
V =√2gR
V=√[2 * 10 * 6.4 x 10\(^6\)]
V = √128,000,000
11,313.708
increases
decreases
increases then decreases
remains constant
Correct answer is D
No explanation has been provided for this answer.