Post Utme Physics Past Questions and Answers

Question 951:

For a short sighted person, light rays from a point on a vefy distant object is focused ____________

A. In front of the retina
B. On thetretiag by a gonverging lens
C. Behind the retina by a diverging lens
D. In front of the retina at a distance of \(2 F\) from the lens

Question 952:

When light is incident on an object which is magentath colour, which of the following colours would be absorbed?

A. Red and blue
B. Green only
C. Red and eqeen
D. Red only

Question 953:

In a resonance tube experiment, the effective length of the air column for the first resonance is \(20 cm\) when set into vibration by a tuning fork of frequency \(480- Hz\). Neglecting end effect, the velocity of sound air is ____________

A. 96 ms
B. 255 ms
C. 340ms
D. 384 ms

Question 954:

A some wire of' length \(100 cm\) under aftension of' ION, has a frequency of \(250 Hz\). Keeping the length of the wire constant, the tension is adjusted to produce a new frequency of 35011, The next tension is ____________

A. 5.1N
B. 7N
C. 14N
D. 19.6N

Question 955:

One of the properties of the earth's magnetic field is that the ____________

A. Northpoleties in the northern hemisphere
B. Gedgraphicand magnetic meridians coincide
C. Carth's magnetic flux entirely horizontal
D. Aearth's magnetic flux is entirely vertical at a place where the magnetic dip is zero