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.
2.0 x 102Jkg−1K−1
2.0 x 102Jkg−1
4.0 x 104Jkg−1K−1
4.0 x 104Jkg−1
Correct answer is C
Heat energy = Electrical Energy
MCθ = power x time
5 x 1 x 10−2 x C = 100 x 20
C = 2005×102
= 4 x 104 J/kg/oC
10.06cm3
10.04 cm3
10.02 cm3
10.20 cm3
Correct answer is A
3 x α = V2−V1V1×Δθ
3 x 2 x 10−5 = V2−10100×10
V2 = (100 x 10 x 3 x 2 10−2) + 10
= 10.06 cm3
I. Light is passing from optical denser medium to optically less dense medium
II. Light is passing from optically less dense medium to optically denser medium
III. Angle of incidence is greater than a certain critical value
IV. Angle of incidence is lesser than a certain critical value
I and II only
II only III only
III and IV only
I and III only
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements about defects of vision is/are CORRECT?
I. For a long sighted person, close objects appear blurred
II. For a short sighted person, distant objects appear blurred
III. Short sight is corrected by using a pair of converging lenses
I only
II only
I and II only
II and III only
Correct answer is C
Statements I & II are correct
Statement III is incorrect because short sightedness is corrected by using suitable concave or diverging lens
Hence; option C is the correct option