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Q1. Light from a He-Ne laser ( lambda = 632.8 nm ) strikes a pair of slits at normal incidence, forming a double-slit interference pattern on a screen located 1.30 m from the slits. The interference pattern can be observed on the screen. What is the slit separation?
Q2. A dentist uses a small mirror with a radius of 36 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 16 mm from the tooth, what is the magnification of an image?
Q3. A tuning fork vibrating at 594 Hz falls from rest and accelerates at 9.8 m/s
How far below the point of release is the tuning fork when waves of frequency 571 Hz reach the release point? The speed of sound in air is 337 m/s.
Explain answer in units of m.
Problem on a hare and a tortoise battle
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
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An open-open organ pipe is 67.9 cm long. AN open-closed pipe has an essential frequency equal to the third harmonic of the open-open pipe. How long is the open-closed pipe.
What is the ratio of the amplitude
How much heat energy can created throughout motion
A current of 10^-14 A is produced in a free-air chamber operating under saturation conditions. The sensitive volume, in which electronic equilibrium exists, contains 0.22g of air. What is the exposure rate .
What is the physics behind everyday sayings
What is first order diffraction angle of light
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What is tension in each string
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