HIi,

The answer for this question will be π/10.

For solving this you can use the formula  Ein = 1/2BwR^2

where Ein denotes  induced emf, B is the magnetic field, w(omega) denotes angular frequency of disc and R is the radius of disc.

Here, B =  0.1, R = 0.1 and

w(omega) = 10rps = 20 pi radian/sec.

Therefore, Ein = 1/2 × 0.1 × 20π × (0.1)²

= 1/2 × 20π × 0.01 = π/10 V

Hope this helps.