MEDIUM
10th Chhattisgarh Board
IMPORTANT
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What will be the power of a convex lens of focal length 50 cm? What if the lens is concave?

Important Questions on Light: Reflection & Refraction at Spherical Surfaces

MEDIUM
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 13
An object is placed at 15 cm from the pole of a concave mirror of focal length 10 cm. What is the size, position, nature and magnification of the image?
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 14
The radius of curvature of a convex mirror is 30 cm. An object of height 5 cm is kept at a distance of 10 cm from the pole. Find the nature, size and magnification of image.
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 15
The focal length of a concave mirror is 10 cm. To obtain an image 5 times bigger than the object, where should the object be placed so that the image is real.
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 15
The focal length of a concave mirror is 10 cm. To obtain an image 5 times bigger than the object, where should the object be placed so that the image is virtual. 
 
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 16
The radius of curvature of a convex mirror is 30 cm. What will be the size, position and nature of the image if the object is placed at 12 cm from the pole. 
HARD
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 16
The radius of curvature of a concave mirror is 30 cm. What will be the size, position and nature of the image if the object is placed at 12 cm from the pole.
MEDIUM
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 17
The image of an object kept at 30 cm from the pole of a convex mirror forms at 10 cm. What is the focal length of the mirror in centimetre? 
MEDIUM
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 13 - Light: Reflection & Refraction at Spherical Surfaces>Exercise>Q 18
The focal length of a concave mirror is 12 cm. If the object is placed at focus, where will the image be formed?