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.
1.48
1.50
1.53
1.67
Correct answer is C
n = \(\frac{\sin \frac{1}{2} (dm + A)}{\sin \frac{1}{2} A}\)
= \(\frac{\sin \frac{1}{2} (40 + 60)}{\sin \frac{1}{2} \times 60}\)
= 1.532
The image formed by a convex mirror is always
real, erect and diminished
real, inverted and diminished
virtual, inverted and diminished
virtual, erect and diminished
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements about the image formed by a plane mirror is not correct?
it is laterally inverted
it has unit magnification
it is formed by actual intersection of rays
its distance from the mirror is equal to that of the object from the mirror
Correct answer is C
No explanation has been provided for this answer.
Ether produces a cooling effect when it is poured on the hand because it has
low conductivity
high conductivity
high latent heat of vaporization
low latent heat of vaporization
Correct answer is C
No explanation has been provided for this answer.
150 Jkg-1K-1
300 Jkg-1K-1
320 Jkg-1K-1
1960 Jkg-1K-1
Correct answer is A
MC\(\theta\)metal = MC\(\theta _{water}\)
0.2 x C x 70 = 0.1 x 4200 x 5
C = 150