The refractive index of the medium M in the diagram above is
The refractive index of the medium M in the diagram above is A. 1/√3 B. 2√3 C. √3…
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A person can focus an object only when it lies within 200cm from him. Which…
A person can focus an object only when it lies within 200cm from him. Which spectacles should be…
The pitch of a sound note depends on
The pitch of a sound note depends on A. timbre B. frequency C. harmonics D. quality Correct Answer:…
What happens to the rays in a parallel beam of light?
What happens to the rays in a parallel beam of light? A. They diverge as they travel B.…
A ray of light makes an angle of 35o with a plane mirror. What is…
A ray of light makes an angle of 35o with a plane mirror. What is the angle of…
In which of the following material media will sound travel fastest?
In which of the following material media will sound travel fastest? A. oil B. metal C. gas D.…
What types of mirror are capable of producing parallel beams of light such as those…
What types of mirror are capable of producing parallel beams of light such as those arising from the…
the diagram above shows forces 4N, 6N, 10N and 8N which act at a point…
the diagram above shows forces 4N, 6N, 10N and 8N which act at a point O in the…
The earth is four times the size of the moon and the acceleration due to…
The earth is four times the size of the moon and the acceleration due to gravity on the…
In a hydraulic press , a force of 40N is applied on the effort piston…
In a hydraulic press , a force of 40N is applied on the effort piston of area 0.4m2.…