366j
240j
144j
90j
Correct answer is C
F = 6N, m = 2kg, t = 4s, u = 0 (stationary or at rest)
| K.E | = | 1
2 |
mv\(^2\) |
| F | = | mv
t |
from rest
| K.E | = | 1
2 |
m( | Ft
m |
)\(^2\) | = | 1
2 |
× | 2 x (\(\frac{6 \times 4}{2})^2 = 12^2 = 144J\) |
Diaphragm, Aperture, film
Aperture, Diaphragm, Film
Film, Diaphragm, Aperture
Film, Aperture, Diaphragm
Correct answer is D
- retina is similar to film
- pupil is similar to aperture
- iris is similar to diaphragm
6.7N/kg
7.9N/kg
8.0N/kg
9.8N/kg
Correct answer is D
| E | = | F
m |
= | GMm/d\(^2\)
m |
= | GM
d\(^2\) |
| E | = | 6.7 × 10\(^{-11}\) × 6 × 10\(^{24}\)
(6.4 × 10\(^6\))\(^2\) |
= | 9.8N
kg |
E = g = 9.8N/kg
I & II only
I & III only
II & III only
I, II & III
Correct answer is D
- sound travels through solids, liquids & gases
- sound travels faster in solid than in liquid & faster in liquid than in gases.
I & II
II & III
III & IV
IV & V
Correct answer is C
As conduction of gases is at low pressure and high voltage, called field or cold cathode emission.