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IGCSE A Level Physics Practice Test 5

# Gravitational Field Representation Quiz Questions and Answers PDF - 5

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## Gravitational Field Representation Questions and Answers : Quiz 5

MCQ 21:

Force acting on two point masses is directly proportional to

1. sum of masses
2. difference of masses
3. distance between masses
4. product of masses
MCQ 22:

Maximum displacement from equilibrium position is

1. frequency
2. amplitude
3. wavelength
4. period
MCQ 23:

Attenuation coefficient of bone is 600 m-1 for x-rays of energy 20 keV and intensity of beam of x-rays is 20 Wm-2, then intensity of beam after passing through a bone of 4mm is

1. 3 Wm-2
2. 2.5 Wm-2
3. 2.0 Wm-2
4. 1.8 Wm-2
MCQ 24:

Contact force always acts at

1. acute angles to the surface producing it
2. right angles to the surface producing it
3. obtuse angle to the surface producing it
4. parallel to the surface producing it
MCQ 25:

Unit of luminous intensity is

1. m
2. kg
3. cd
4. mol