SATHEE: Optics Question 324

Optics Question 324

Question: Radiations of intensity $0.5 W / m^{2}$ are striking a metal plate. The pressure on the plate is

[DCE 2004]

Options:

A) $0.166 \times 10^{- 8} N / m^{2}$

B) $0.332 \times 10^{- 8} N / m^{2}$

C) $0.111 \times 10^{- 8} N / m^{2}$

D) $0.083 \times 10^{- 8} N / m^{2}$

Show Answer

Answer:

Correct Answer: A

Solution:

Intensity or power per unit area of the radiations $P = f v$

Therefore $f = \frac{P}{v} = \frac{0.5}{3 \times 10^{8}} = 0.166 \times 10^{- 8} N / m^{2}$

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Optics Question 324

Question: Radiations of intensity 0.5W/m2 are striking a metal plate. The pressure on the plate is

Options:

Answer:

Solution:

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Question: Radiations of intensity $0.5 W / m^{2}$ are striking a metal plate. The pressure on the plate is