An object is placed 20cm from a concave mirror of focal l...
An object is placed 20cm from a concave mirror of focal length 15cm. Calculate the linear magnification of the image formed
0.5
1.5
2.0
3.0
Correct answer is D
1U+1V=1F
1V=1F−1U
1V=115−120
1V=4 - 360
1V=160
V = 60cm
M = VU=6020
M = 3.0cm
I. Melting II. Boiling III. Refraction IV. Conduction Which combination of the above is ...
A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms−1 from the top of a to...
An electric lamp rated 120W is used on a 240Vrms, calculate the resistance of its filament ...
Cloud formation is the direct result of ...
Radio carrier waves are generated by causing electrons to oscillate rapidly in...
Which gas produces a red coloured light in a discharge tube? ...