4.0 s

7.5 s

15. 0 s

6.0s

1960 m

2 k m

980 m

1 km

শূন্য

অসীম

ভূ -পৃষ্ঠের সমান

ভূ -পৃষ্ঠ থেকে কম

55,000 cal

57, 142.857 cal

6,000 cal

57, 140. 5 cal

বক্রতার কেন্দ্রে

বক্রতার ব্যাসার্ধের উপর

ফোকাস তলে

অসীম

$0°$

$90°$

$45°$

$180°$

3 Ω

5 Ω

8Ω

3.5 Ω

$40°$

$-32°$

$-40°$

$12°$

$180°$

$0°$

$120°$

$90°$

$5 c{m}^3$

$2.5 c{m}^3$

$7.5 c{m}^3$

$125 c{m}^3$

2 MHz

5 MHz

4 MHz

20 MHz

400 s

1000 s

1600 s

100000 s

$4.04 \times {10}^{-2}N{m}^{-2}$

$2.20 N{m}^{-2}$

$4.04 \times {10}^5 N{m}^{-2}$

$2.02\times {10}^5 N{m}^{-2}$

6 V

3 V

4 V

2.5 V

Electromagnetic waves

Positrons

Protons

Electrons

behind the principal focus

a distance larger than 2 f on the same side as the object

a distance between f and 2 f behind

a distance beyond 2 f behind

1.08 micro farad

0.92 micro farad

4.5 micro farad

9 micro farad

Both length and cross sectional area are double

Both length and radius are soubled

Only the length is increased

Cross sectional areas reduced

$4\times {10}^{-2}m$

$4\times {10}^{-4}m$

$5\times {10}^{-3}m$

$5\times {10}^{-2}m$

$341 cm{s}^{-1}$

$341 m{s}^{-1}$

$332m{s}^{-1}$

$332cm{s}^{-1}$

4.5 s

9s

8/9s

9/8s

0.74 m

3.74 m

3m

2.26 m

255 V

510 V

358 V

123 V

Concave lens of focal length 50 cm

Concave lens of focal length 25 cm

Convex lens of focal length 50 cm

Convex lens of focal length 25 cm

$\frac{1}{2} C{V}^2$

$\frac{1}{2}QV$

$\frac{Q^2}{2C}$

$\frac{Q}{2C^2}$