State whether true or false:
(a) The Mughal empire became stronger in the
eighteenth century.
(b) The English East India Company was the only
European company that traded with India.
(c) Maharaja Ranjit Singh was the ruler of Punjab.
(d) The British did not introduce administrative
changes in the territories they conquered.
Explain the phenomenon of diffraction of light. How does the diffraction pattern change when the wavelength of light is increased?
Without plotting the points indicate the quadrant in which they will lie, if
(i) ordinate is 5 and abscissa is – 3
(ii) abscissa is – 5 and ordinate is – 3
(iii) abscissa is – 5 and ordinate is 3
(iv) ordinate is 5 and abscissa is 3
Derive the mirror formula for a concave mirror. Explain the sign conventions used in this derivation.
Fill in the blanks:
(a) The British conquest of Bengal began with the
Battle of ___________.
(b) Haidar Ali and Tipu Sultan were the rulers of
___________.
(c) Dalhousie implemented the Doctrine of
___________.
(d) Maratha kingdoms were located mainly in the
___________ part of India.
Plot the following points and check whether they are collinear or not :
(i) (1, 3), (– 1, – 1), (– 2, – 3)
(ii) (1, 1), (2, – 3), (– 1, – 2)
(iii) (0, 0), (2, 2), (5, 5)
Explain the concept of root mean square (RMS) value in an AC circuit. How is it different from the average value?
Define electromagnetic induction and explain Faraday’s laws of electromagnetic induction. What factors affect the magnitude of the induced emf?
Plot the following points and write the name of the figure obtained by joining them in order:
P(– 3, 2), Q (– 7, – 3), R (6, – 3), S (2, 2)
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