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Start learning 50% faster. Sign in nowWhich of the following principle is used to produce low-temperatures'?
Specific resistance of a conductor increases with :
Which instrument is used to measure electric current?
A displacement-time graph is curved and concave downward from t = 0 to t = 2 s. Which statement is true?
Which type of mirror is used in car headlights?
A cube of side a encloses a point charge q at its center. What is the electric flux through one of its faces?
Which of the following statements is true about energy bands in solids?
A body is projected upwards with an initial velocity u . At the highest point, what is its acceleration?
What happens to the resistance of a wire if its length is doubled?
A person throws a ball from ground level at speed u and angle θ. The ball reaches maximum height H and range R. What is the ratio H/R?