Physics Past Questions and Answers

The temperature of 900cm³ of an ideal gas at a pressure of 114cm Hg is 27^oC. Calculate its volume at 76cm Hg and 0^oC

A 50.0cm³
B 546.0cm³
C 659.3cm³
D 1228.5cm³

Question 977:

The basic difference between a transverse wave and a longitudinal wave travelling in the same direction in a medium is in the

A Amplitude of the wave
B Wavelength of the wave
C Direction of vibration of the particles of the medium
D Period of vibration of the particle of the medium

Question 978:

A wave travelling from water to glass suffers a change in its speed at the common boundary. Which of the following properties explains this observation?

A Dispersion
B Refraction
C Interference
D Diffraction

Question 979:

The image of an optical pin placed at the principal focus of a concave mirror will be formed

A Between the principal focus and the pole
B At the centre of the curvature
C Between the principal focus and the centre of curvature
D At infinity

Question 980:

A man 1.8m tall stands 3m away from a pin hole camera. If the distance between the pin hole and the screen of the camera is 0.3m. Calculate the height of the image of the man produced by the camera

A 0.18m
B 0.50m
C 1.62m
D 18.00m