Solve the equation given below
2 - 5 + 7 × 8 + (9 + 11) ÷ 2 = ?
If the mirror is placed to the right of the following figure, select the correct mirror image of the given figure
Which of the following statements about the speed of sound in different mediums at 25°C is/are true?
A. In helium gas, the speed of sound is 965 m/s.
B. In hydrogen gas, the speed of sound is 1284 m/s.
Both A and B are true
Only A is true
Neither A nor B is true
Only B is true