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Physics Question Paper

Physics 

Course:Secondary Level

Institution: Mock question papers

Exam Year:2008



MUNYAKA HIGH SCHOOL

MOCK

TERM TWO

DATE:6/7/2008

TIME:2HRS 30MIN

PHYSICS

INSTRUCTIONS:
1.Read all questions carefully.
2.All questions are compulsory.

Q.1.A lighting flash is seen,followed by thunder 3 seconds later. How far is the storm from the observer?
(2 marks)
Q.2.A person claps his hands at approximately 0.5 s intervals in front of a wall 90m away.
He notices that each echo produced by the wall coincides with the next clap.Determine the speed of the sound.
(2 marks)
Q.3.A fishing boat uses ultrasound of frequency 6000Hz to detect fish directly below.
Two echoes of the ultrasound are received,one after 0.09s coming from the shoal of fish and the other after 0.12 s coming from the sea bed. If the sea bed is 84 m below the ultrasound transceiver,calculate:
a)the speed of the ultrasound waves in water. (2 marks)
b)the wavelength of the ultrasound waves in water.(2 marks)
c)the depth of the shoal of fish below the boat.(2 marks)
Q.4.Name three radiations in the electromagnetic spectrum.(3 marks)
Q.5.State three properties that are commom to all electromagnetic waves.
(3marks)
Q.6.State the reason why television and FM radio waves have a shorter range than medium waves(MW)
(2 marks)
Q.7.Explain why television reception in a place surrounded by the hills is poor.(5 marks)
Q.8.State two uses of microwaves.(2 marks)
Q.9.Name three detectors of infrared radiation.(3 marks)
Q.10.State the difference between sound waves and electromagnetic waves in terms of:
a)the origin of the waves.(2 marks)
b)the speed of the waves.(2 marks)
c)the transmitting media.(2 marks)
Q.11.The sun is approximately 15000000000km away from the earth. How long does it take for sunlight to reach the earth from the sun?
(5 marks)
Q.12.Describe briefly the production of X-rays in an X-ray tube starting from the time electrons are produced at the cathode. (5 marks)






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