The length of the longest rod that can be placed in a room of dimensions `(10 m xx 10 m xx 5m)` is

At new temperature T °C, change in length of rod is, ∆LS = L0(αS∆T) = 50.00(12 × 10-6 × 100) = 0.06 cm. Hence, the actual length of rod at T °C, LS = 50.06 cm Due to change in...

Correct option is: (B) 120.18 cm

Correct option is: (B) 100 °C/m

Correct option is: (A) 35 °C

(B) 68 cm LCu αCu ∆T = LAl αAl ∆T ∴ 88 × (1.7 × 10-5) = LAl(2.2 × 10-5) ∴ LAl = \(\frac{88\times1.7}{2.2}\) ∴ LAl = 68 cm

Correct option is C) a = b

Correct option is (D) 15m Length of the longest pole = Length of diagonal of cuboid \(=\sqrt{l^2+b^2+h^2}=\sqrt{10^2+10^2+5^2}\) \(=\sqrt{100+100+25}=\sqrt{225}\) = 15 m

B) Square only

Correct option is (A) 12 cm Longest chord in a circle is diameter of the circle. \(\therefore\) Diameter of circle = 24 cm \((\because\) Given that longest chord in the circle is 24 cm) \(\Rightarrow\) 2r = 24...