What is the equivalent resistance between A and B

|
(a) |
(b) |
(c) |
(d) 2R |
What is the equivalent resistance between A and B

|
(a) |
(b) |
(c) |
(d) 2R |
(c)
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In nuclear reactions, we have the conservation of
|
(a) Mass only |
(b) Energy only |
|
(c) Momentum only |
(d) Mass, energy and momentum |
If half-life of a substance is 3.8 days and its quantity is 10.38 gm. Then substance quantity remaining left after 19 days will be
|
(a) 0.151 gm |
(b) 0.32 gm |
(c) 1.51 gm |
(d) 0.16 gm |
Light is incident normally on a diffraction grating through which the first order diffraction is seen at 32o. The second order diffraction will be seen at
|
(a) 48o |
|
(b) 64o |
|
(c) 80o
|
|
(d) There is no second order diffraction in this case |
The approximate wavelength of a photon of energy 2.48 eV is
|
(a) 500 Å |
(b) 5000 Å |
(c) 2000 Å |
(d) 1000 Å |
The two metallic plates of radius r are placed at a distance d apart and its capacity is C. If a plate of radius r/2 and thickness d of dielectric constant 6 is placed between the plates of the condenser, then its capacity will be
|
(a) 7C/2 |
(b) 3C/7 |
(c) 7C/3 |
(d) 9C/4 |
In the circuit shown in figure the maximum output voltage V0 is

|
(a) 0 V |
(b) 5 V |
(c) 10 V |
(d) |
The e.m.f. of a standard cell balances across 150 cm length of a wire of potentiometer. When a resistance of 2 Ω is connected as a shunt with the cell, the balance point is obtained at 100 cm. The internal resistance of the cell is
|
(a) 0.1 Ω |
(b) 1 Ω |
(c) 2 Ω |
(d) 0.5 Ω |