Explanation:
A periodic motion need not be necessarily oscillatory.
For example: The moon revolving around the earth.
Also, an oscillatory motion need not be necessarily periodic.
For example: Damped harmonic motion.
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A thin lens with focal length f to be used as magnifying glass. Which of the following statements regarding the situation is true?
A potentiometer is an ideal device of measuring potential difference because
|
(a) It uses a sensitive galvanometer |
|
(b) It does not disturb the potential difference it measures |
|
(c) It is an elaborate arrangement |
|
(d) It has a long wire hence heat developed is quickly radiated |
Which of the following isotopes is normally fissionable ?
|
(a) |
(b) |
(c) |
(d) |
Two similar bar magnets P and Q, each of magnetic moment M, are taken, If P is cut along its axial line and Q is cut along its equatorial line, all the four pieces obtained have
|
(a) Equal pole strength |
(b) Magnetic moment |
|
(c) Magnetic moment |
(d) Magnetic moment M |
Two bulbs of 100 W and 200 W working at 220 volt are joined in series with 220 volt supply. Total power consumed will be approximately.
|
(a) 65 watt |
(b) 33 watt |
(c) 300 watt |
(d) 100 watt |
The drift velocity does not depend upon
|
(a) Cross-section of the wire |
(b) Length of the wire |
|
(c) Number of free electrons |
(d) Magnitude of the current |
