Post Utme Physics Past Questions and Answers

Question 806:

When a red rose flower is observed in blue light, what colour does the observer see?

A. Red
B. Blue
C. Magneta
D. Yellow

Question 807:

The eclipse of the sun occurs when the ____________

A. Moon is between the sun and the earth
B. Earth is between the sun and the moon
C. Moon is completely hidden in earth's shadow
D. Moon's umbra falls on some part of the earth

Question 808:

A Cannon Is fired from town X. After how long is the.sound heard at town \(Y\) \(4.95 \mathrm{~km}\) away?
[velocity of sound in air \(=330 \mathrm{~ms}^{-1}\) ]

A. 30 s
B. \(10 s\)
C. \(12 \mathrm{~s}\)
D. \(15 s\)

Question 809:

An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is \(15 \mathrm{~cm}\), what is the object distance?

A. \(10 \mathrm{~cm}\)
B. \(25 \mathrm{~cm}\)
C. \(16 \mathrm{~cm}\)
D. \(14 \mathrm{~cm}\)

Question 810:

The capacitance of a parallel plate presences of dielectric. What is the dielectric constant?

A. \(0.3\)
B. \(6.0\)
C. \(3.0\)
D. 2.0