A metallic bar of Youngs modulus, 0.5 × 10^11 N m^–2 and coefficient of linear thermal expansion 10^–5 °C–1, length 1 m and area of cross-section 10^–3 m2 is heated from 0°C to 100°C without expansion or bending. The compressive force developed in it is :
(1) 5 x 103
(2) 50 x 103
(3) 100 x 103
(4) 2 x 103
NEET -2024
Solution:
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In the above diagram a strong bar magnet is moving towards solenoid2 from solenoid1. The direction of induced current in solenoid1 and that in solenoid2, ,respectively , are through the directions:
