If V be the accelerating voltage, then the maximum frequency of continuous X-rays is given by
(a) 
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(b) 
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(c)
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(d) 
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What is increased in step-down transformer
|
(a) Voltage |
(b) Current |
(c) Power |
(d) Current density |
What is the net force on a Cl– placed at the centre of the bcc structure of CsCl
|
(a) Zero |
(b) |
(c) |
(d) Data is incomplete |
A plano-convex lens is made of refractive index of 1.6. The radius of curvature of the curved surface is 60 cm. The focal length of the lens is
|
(a) 400 cm |
(b) 200 cm |
(c) 100 cm |
(d) 50 cm |
The number of turns of primary and secondary coils of a transformer are 5 and 10 respectively and the mutual inductance of the transformer is 25 henry. Now the number of turns in the primary and secondary of the transformer are made 10 and 5 respectively. The mutual inductance of the transformer in henry will be
|
(a) 6.25 |
(b) 12.5 |
(c) 25 |
(d) 50 |
Work of moderator is
|
(a) To control the velocity of neutrons |
(b) Cooling |
|
(c) As fuel |
(d) It is used for safety |
