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The image of a real object in a convex mirror is 4 cm from the mirror. If the mirror has a radius of curvature of 24 cm, find the position of object and magnification.
05
Oct
The image of a real object in a convex mirror is 4 cm from the mirror. If the mirror has a radius of curvature of 24 cm, find the position of object and magnification. find the position of object and magnification. The image of a real object in a convex mirror is 4 cm from [...]
A concave mirror gives a real image magnified 4 times. When the object is moved 3 cm the magnification of the real image is 3 times. Find the focal length of mirror.
05
Oct
A concave mirror gives a real image magnified 4 times. When the object is moved 3 cm the magnification of the real image is 3 times. Find the focal length of mirror. A concave mirror gives a real image magnified 4 times. When the object is moved 3 cm the magnification of the real image [...]
Evaluate: sin 25 cos 65 + cos 25 sin 65
05
Oct
Evaluate: sin 25 cos 65 + cos 25 sin 65 Evaluate: sin 25 cos 65 + cos 25 sin 65 October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Converging rays are incident on a convex spherical mirror so that their extensions intersect 30 cm behind the mirror on the optical axis. The reflected rays form a diverging beam so that their extensions
05
Oct
Converging rays are incident on a convex spherical mirror so that their extensions intersect 30 cm behind the mirror on the optical axis. The reflected rays form a diverging beam so that their extensions State the following statements as True of False. (a) A convex mirror cannot form a real image for a real object. [...]
Evaluate : sin square 63 + sin square 27 / cos square 17 + cos square 73
05
Oct
Evaluate : sin square 63 + sin square 27 / cos square 17 + cos square 73 Evaluate : sin square 63 + sin square 27 / cos square 17 + cos square 73 October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
A beam of light converges to a point on a screen S. A mirror is placed in front of the screen at a distance of 10 cm from the screen. It is found that the beam now converges at a point 20 cm
05
Oct
A beam of light converges to a point on a screen S. A mirror is placed in front of the screen at a distance of 10 cm from the screen. It is found that the beam now converges at a point 20 cm A beam of light converges to a point on a screen S. [...]
Write all the other trigonometric ratios of A in terms of sec A.
05
Oct
Write all the other trigonometric ratios of A in terms of sec A. Write all the other trigonometric ratios of A in terms of sec A. October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Express the trigonometric ratios sin A, sec A and tan A in terms of cot A .
05
Oct
Express the trigonometric ratios sin A, sec A and tan A in terms of cot A . Express the trigonometric ratios sin A sec A and tan A in terms of cot A . October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°.
05
Oct
Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°. Express sin 67° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°. October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,
An object is placed 15 cm from a mirror and an erect image of size 5 cm is seen. Determine the focal length and the nature of the mirror. Assume the object size is 15 cm.
05
Oct
An object is placed 15 cm from a mirror and an erect image of size 5 cm is seen. Determine the focal length and the nature of the mirror. Assume the object size is 15 cm. An object is placed 15 cm from a mirror and an erect image of size 5 cm is seen. [...]