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A point source S is placed at the bottom of a transparent block of height 10 mm and refractive index 2.72. It is immersed in a lower refractive index liquid as shown in the figure.
07
Oct
A point source S is placed at the bottom of a transparent block of height 10 mm and refractive index 2.72. It is immersed in a lower refractive index liquid as shown in the figure. A point source S is placed at the bottom of a transparent block of height 10 mm and refractive index [...]
Write the following decimal numbers in the expanded form: (i) 20.03 (ii)2.03 (iii)200.03 (iv)2.034
07
Oct
Write the following decimal numbers in the expanded form: (i) 20.03 (ii)2.03 (iii)200.03 (iv)2.034 Write the following decimal numbers in the expanded form: (i) 20.03 (ii)2.03 (iii)200.03 (iv)2.034 October 7, 2020 Category: Chapter 2 - Fraction and Decimals , Maths , NCERT Class 7 ,
A ray of light travelling in the direction 1/2 ( i + root 3 j) is incident on a plane mirror. After reflection, it travels along the direction 1/2 ( i – root 3 j). The angle of incidence is
07
Oct
A ray of light travelling in the direction 1/2 ( i + root 3 j) is incident on a plane mirror. After reflection, it travels along the direction 1/2 ( i – root 3 j). The angle of incidence is A ray of light travelling in the direction 1/2 ( i + root 3 j) [...]
A ball is dropped from a height of 20 m above the surface of water in a lake. The refractive index of water is 4/3. A fish inside the lake, in the line of fall of the ball, is looking at the
07
Oct
A ball is dropped from a height of 20 m above the surface of water in a lake. The refractive index of water is 4/3. A fish inside the lake, in the line of fall of the ball, is looking at the A ball is dropped from a height of 20 m above the surface [...]
Express in kg: (iii) 4 kg 8 g
07
Oct
Express in kg: (iii) 4 kg 8 g Express in kg: (iii) 4 kg 8 g October 7, 2020 Category: Chapter 2 - Fraction and Decimals , Maths , NCERT Class 7 ,
Two beams of red and violet colors are made to pass separately through a prism ( angle of the prism is 60). In the position of minimum deviation, the angle of refraction will be
07
Oct
Two beams of red and violet colors are made to pass separately through a prism ( angle of the prism is 60). In the position of minimum deviation, the angle of refraction will be the angle of refraction will be Two beams of red and violet colors are made to pass separately through a prism [...]
Express in kg: (ii) 3470 g
07
Oct
Express in kg: (ii) 3470 g Express in kg: (ii) 3470 g October 7, 2020 Category: Chapter 2 - Fraction and Decimals , Maths , NCERT Class 7 ,
Express in kg: (i) 200 g
07
Oct
Express in kg: (i) 200 g Express in kg: (i) 200 g October 7, 2020 Category: Chapter 2 - Fraction and Decimals , Maths , NCERT Class 7 ,
In an experiment for determination of refractive index of glass of a prism by i – delta, plot, it was found that a ray incident at angle 35, suffers a deviation of 40 and that it emerges
07
Oct
In an experiment for determination of refractive index of glass of a prism by i – delta, plot, it was found that a ray incident at angle 35, suffers a deviation of 40 and that it emerges In an experiment for determination of refractive index of glass of a prism by i - delta it [...]
3 (ii) Express 35 mm in cm, m and km
07
Oct
3 (ii) Express 35 mm in cm, m and km 3 (ii) Express 35 mm in cm m and km October 7, 2020 Category: Chapter 2 - Fraction and Decimals , Maths , NCERT Class 7 ,