The Concave mirror - u-v method
 1) What is the relation between focal length(f) and radius of curvature(R) of a concave mirror? f = R/2 Both a and c R = 2f f = 2R

 2) What is the nature of image when the object is placed between the pole and the focus of a concave mirror? Virtual - erect Imaginary - inverted Real - inverted None of these

 3) Which of the following is a situation which uses spherical mirrors? Satellite dishes Magnifying glasses Rear view mirrors in vehicles All of of these

 4) Choose the incorrect statement from the following? Concave mirrors have reflecting inner surface. The image formed in concave mirror is always real. The mirror equation is one which connects u, v, and f. Real inverted image with same size is obtained if the object is placed on the centre of curvature of a concave mirror.

 5) Name the imaginary line passing through the pole and centre of curvature of a spherical mirror. Radius of curvature Aperture Principal axis Focal length

 6) What is the nature of the focus of a concave mirror? Virtual None of these Real or virtual Real

 7) What is the radius of curvature of a plane mirror? Depends on the size of the mirror. ∞ 0 1

 8) A concave mirror of focal length 15 cm creates a real image 45 cm away from its principal axis. The corresponding object is located how far from the mirror? 2.25 cm 22.1 cm 2.25 m 22.5 cm

 9) Which of the following best describes the image when an object is placed 20 cm in front of a concave mirror of focal length 10 cm? Real inverted image of same size None of these Virtual erect enlarged image Real inverted diminished image

 10) If a man’s face is 20 cm in front of concave shaving mirror creating an upright image 2 times as large as the object, what is the focal length of the mirror? 40.5 cm 40 cm -45 cm -40 cm

Cite in Scientific Research:

Nedungadi P., Raman R. & McGregor M. (2013, October). Enhanced STEM learning with Online Labs: Empirical study comparing physical labs, tablets and desktops. In Frontiers in Education Conference, 2013 IEEE (pp. 1585-1590). IEEE.

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