Aવિધાન અને કારણ બંને સત્ય છે અને કારણ એ વિધાનની સાચી સમજૂતી છે.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion. If roads of the mountain were to go straight up, the slope \(\left( \theta \right)\) would have been large, the frictional force \(\left( {\mu mg\,\cos \,\theta } \right)\) would be small. Due to small friction, wheels of vehicle would slip. Also for going up a large slope, a greater power shall be required.