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More Physics Questions
Which one of the following is a good electrical conductor?
Which of the following statements is/are false? 1. The value of G is the same as its value on the moon, on Earth. 2. The gravitational force between the centers of two masses of 2 kg placed at a distance of 1m is 26.68 × 10 -11 Nm 2 /kg 2 . 3. The force is inversely proportional to the square of the distance between the two objects. 4. The force of gravity between two objects doubles when the distance between them is halved.
In which of the following option sound may not be across travel?
Consider the following statements. 1. A fibre is an optical system based upon the basic principle of total internal reflection. 2. In total internal reflection, the angle of incidence should always be greater than critical angle. 3. The critical angle is very low for a light ray coming from diamond to air. Which of the statements given above is/are correct?
One parsec is equal to . . . . . . . . light year