Question

10. When giving presentations, many people use a laser pointer to direct the attention of the audience to information on a sc
0 0
Add a comment Improve this question Transcribed image text
Answer #1

Sol:- Scien Pointer = 3 mW Spot diameter = 2 mm The Spot area will be 7(de) A= +7X1%)2 TA = timmt The radiation Pressure (0)

Add a comment
Know the answer?
Add Answer to:
10. When giving presentations, many people use a laser pointer to direct the attention of the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • When giving presentations, many people use a laser pointer to direct the attention of the audience...

    When giving presentations, many people use a laser pointer to direct the attention of the audience to information on a screen. If a 2.8-mW (time-averaged power) pointer creates a spot on the screen that has a 3.2 mm radius, what is the radiation pressure on a screen that reflects all of the light? i. 1.86 x 10-9 Pa ii. 5.83 x 10-9 Pa iii. 5.80 x 10-7 Pa iv. 1.75 Pa When giving presentations, many people use a laser pointer...

  • A laser pointer of power P = 3.0 mW creates a spot on a screen that...

    A laser pointer of power P = 3.0 mW creates a spot on a screen that is 2.0 mm in diameter. Determine the maximum Electric and Magnetic fields incident on the screen. 1 dU P A dt A 1=c<u>=copic Emax = cBmax

  • A rectangular coil of wire N = 20 loops with sides a = 0.30m and b...

    A rectangular coil of wire N = 20 loops with sides a = 0.30m and b = 0.70m is positioned perpendicular to a uniform 0.55T magnetic field as shown below. It is quickly pulled from the field at constant speed perpendicular to B to a region where B drops abruptly to zero, At t=0, the middle of the coil in at the edge of the field. The total resistance of the loop in R = 46 ohms. It takes 0.0125...

  • A 3 mW red ( = 670 nm) laser pointer produces a 2 mm diameter spot...

    A 3 mW red ( = 670 nm) laser pointer produces a 2 mm diameter spot on a screen. a) If we place a f = 1cm lens before the screen, and the radius of curvature of the wavefront reaching the lens is 2 m, find the waist of the focused light. b) The intensity of the light at the center of the beam is given by Imax= 2P/πw2(in W/m2). Calculate the maximum intensity at the focal point. c) If...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT