- ✓$\left[ M ^1 L^1 T^{-3} A^{-1}\right]$
- B$\left[ M ^1 L^2 T^{-3} A^{-1}\right]$
- C$\left[ M ^1 L^1 T^{-2} A^{-1}\right]$
- D$\left[ M ^0 L^1 T^{-3} A^{-1}\right]$
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In vacuum the speed of light depends upon
|
(a) Frequency |
(b) Wave length |
|
(c) Velocity of the source of light |
(d) None of these |
A certain piece of silver of given mass is to be made like a wire. Which of the following combination of length (L) and the area of cross-sectional (A) will lead to the smallest resistance
|
(a) L and A |
|
(b) 2L and A/2 |
|
(c) L/2 and 2 A |
|
(d) Any of the above, because volume of silver remains same |
$\lambda\geq\lambda_0$
$\lambda\geq2\lambda_0$
$\lambda\leq\lambda_0$
$\lambda<\frac{\lambda_ 0}{2}.$
Time period of a freely suspended magnet does not depend upon
| (a) Length of the magnet |
| (b) Pole strength of the magnet |
| (c) Horizontal component of earth's magnetic field |
| (d) Length of the suspension thread |
A photon of energy 8 eV is incident on a metal surface of threshold frequency 1.6
, then the maximum kinetic energy of photoelectrons emitted is (h = 6.6
|
(a) 4.8 eV |
(a) 4.8 eV |
(c) 1.4 eV |
(d) 0.8 eV |
A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be
|
(a) + 2.0 D |
(b) – 1.0 D |
(c) + 1.0 D |
(d) – 0.5 D |
In a Young’s double slit experiment, the slit separation is 0.2 cm, the distance between the screen and slit is 1m. Wavelength of the light used is 5000 Å. The distance between two consecutive dark fringes (in mm) is
|
(a) 0.25 |
(b) 0.26 |
(c) 0.27 |
(d) 0.28 |