Image formed by a convex mirror is
|
(a) Virtual |
(b) Real |
(c) Enlarged |
(d) Inverted |
Image formed by a convex mirror is
|
(a) Virtual |
(b) Real |
(c) Enlarged |
(d) Inverted |
(a) Virtual
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If a high power heater is connected to electric mains, then the bulbs in the house become dim, because there is a
|
(a) Current drop |
(b) Potential drop |
(c) No current drop |
(d) No potential drop |
Four equal capacitors, each of capacity C, are arranged as shown. The effective capacitance between A and B is
|
(a) |
(b) |
(c) |
(d) C |
Assertion : Electric field outside the conducting wire which carries a constant current is zero.
Reason : Net charge on conducting wire is zero.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
Two lines of force due to a bar magnet
|
(a) Intersect at the neutral point |
|
(b) Intersect near the poles of the magnet |
|
(c) Intersect on the equatorial axis of the magnet |
|
(d) Do not intersect at all |
The half life of the isotope
is 15 hrs. How much time does it take for
of a sample of this isotope to decay
|
(a) 75 hrs |
(b) 65 hrs |
(c) 55 hrs |
(d) 45 hrs |
Assertion : A pulsor is a source of radio waves which change in terms of intensity at regular interval of time
Reason : A pulsor is a rotating neutron star
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |