Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
1.3 x 10-15 Hz
3.1 x 1052 Hz
3.2 x 10-53 Hz
8.0 x 1014 Hz
Correct answer is D
E = hf
f = (E)/h
∴ f = (3.3 x 1.6 x 10-19)/6.6 x 10-34
= 0.8 x 1015 = 8.0 x 1014 Hz
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