1 . 5000A°

• A. 2.50 mm
• B. 2.25 mm
• C. 1.25 mm
• D. 1.00 mm

Answer: Option C

Explanation:

2 . a2b°+b2a°

• A. a+b
• B. 0
• C. 2
• D. $a^2+b^2$

Answer: Option D

Explanation:

3 . 6630A°

• A. $6\times {10}^{-19}J$
• B. $4\times {10}^{-19}J$
• C. $5\times {10}^{-19}J$
• D. $3\times {10}^{-19}J$

Answer: Option C

Explanation:

4 . 1A°

• A. ${10}^{-10}m$
• B. ${10}^{-6}m$
• C. ${10}^{-9}m$
• D. ${10}^{-8}m$

Answer: Option A

Explanation:

5 . A°

• A. $\frac{\lambda y}{2x}$
• B. $\frac{2x}{\lambda y}$
• C. $\frac{\lambda {10}^{-10}y}{2x{10}^{-3}}$
• D. $\frac{5y\times {10}^{-7}}{x\times {10}^{-3}}$

Answer: Option D

Explanation: